Malicious PDF — malware analysis report

Static analysis result for SHA-256 419153ed318965d3…

MALICIOUS

PDF

132.7 KB Created: 2021-08-04 04:31:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b085a0901f7754941a1e41b4cb651182 SHA-1: 8a952a41e088ccad062138bfa694a5301b25fea0 SHA-256: 419153ed318965d363602fc9f021227ac86936dd4ba7ae1b7af23e2edebfc23e
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF document contains multiple heuristics indicating it is a phishing lure, specifically impersonating Apple to solicit credentials. It directs users to external URLs hosted on compromised or disposable domains, such as 'garglob.ru', which is a strong indicator of malicious intent. The ML classifier and ClamAV detection further support the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://garglob.ru/uplcv?utm_term=tzumi+sound+mates+wireless+earbuds+pairing.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://garglob.ru/uplcv?utm_term=tzumi+sound+mates+wireless+earbuds+pairing PDF link annotation
    • http://trendymamy.pl/userfiles/file/96984200738.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/3eca974d8087c25ef016132d21d86514/92802970371.pdfIn PDF document text
    • http://cukrarnakolbaba.eu/obrazky/files/xevumixopumotilalutita.pdfIn PDF document text
    • http://sghscsjamarai.org/guruhargobind/userfiles/file/55532675684.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bc6a4630890---93501147402.pdfIn PDF document text
    • http://southport1969.com/clients/861680/File/9639734876.pdfIn PDF document text
    • https://laplacedesstores.com/upload/file/wimaselegokixavagupog.pdfIn PDF document text
    • http://gentlemensquartersbarbershop.com/wp-content/plugins/super-forms/uploads/php/files/72793be49b19d4ce39db05da54ecd17d/lugemipisu.pdfIn PDF document text
    • http://biaikatolikus.hu/files/file/77658608262.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160bb6c5853905---58725788613.pdfIn PDF document text
    • http://partner-support.net/user_data/userfiles/files/makamojo.pdfIn PDF document text
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/f61304e5019ed07f6820f3322af5fd69/jofefowutisosajezito.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160dc9f95babb1---57110105805.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/77d6e585f87f32a64a31738464a662eb/74559922832.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/wabilobetasekilu.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/1ea2048air5m4dmqq5a6hrt0kt/99663450286.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/pscom5l85usadf6iml7o0sgfr0/19394541057.pdfIn PDF document text
    • https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/gv0ni8qbrn2r07sujo56nkn7cg/66058032381.pdfIn PDF document text
    • https://directorvincentchow.com/fck_filemanager_upload/file/rezakapitogubekofopukex.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160709d1de37ac---zajirugokarunejafanufexi.pdfIn PDF document text
    • https://aakritidigitals.com/userfiles/files/rupan.pdfIn PDF document text
    • http://macabrey-luthier.fr/data/Files/jojaximuvavuxidak.pdfIn PDF document text
    • http://www.impactit.in/ckfinder/userfiles/files/batuzozigawexonifosu.pdfIn PDF document text
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/sog13sa2vc56uaqtprq7emr090/57549230743.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a0dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A0DC 18624 bytes
SHA-256: 9e9bf4949c21a4172a502684402d7a47028f5dd44b63cfadf3b789dee7d3111a
font_01_sfnt_off0001d26a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D26A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001ea81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EA81 11084 bytes
SHA-256: e47a2ecad4809e52699b831bc0a016481e9c068bb1bbb149c063e593ac7666e2

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