Malicious PDF — malware analysis report

Static analysis result for SHA-256 80cc4cc5cae94617…

MALICIOUS

PDF

96.2 KB Created: 2021-09-17 08:00:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: a4fa86e484897232909f344f7c94d19e SHA-1: 282183db2efadbbfaedf29a0fdee62528a3b5388 SHA-256: 80cc4cc5cae946179adf0e7ac6029cd1341ac0f94f767e7e2fd6db471c270bc7
236 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was detected as malicious by ClamAV and ML classifiers, exhibiting characteristics of phishing and payment redirection lures. It contains numerous embedded URLs pointing to compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content or phishing pages. The presence of these links and the overall structure indicate a likely spearphishing attachment aiming to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://philabc.ru/uplcv?utm_term=epic+games+fortnite+download+tablet PDF link annotation
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/f6da3fa83d4e9880fd93edee852b90eb/66939860967.pdfIn PDF document text
    • http://nceed.kr/pds/userfiles/files/98609540238.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1613e6f2842229---84619655338.pdfIn PDF document text
    • https://remont-bez-zabot.ru/files/file/81241805223.pdfIn PDF document text
    • http://karpatskiles.ru/store/file/puzipos.pdfIn PDF document text
    • https://gamedunyasi.com/calisma2/files/uploads/14259383972.pdfIn PDF document text
    • http://fueandhair.com/userfiles/files/67217187842.pdfIn PDF document text
    • http://wangguanhardware.com/userfiles/file/vuxineredepudavuxuwobitup.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/0c80568d477f5eef81156eb0ad56f161/18879128914.pdfIn PDF document text
    • http://evrokomplekt.ru/userfiles/file/93504906085.pdfIn PDF document text
    • http://1night2day.com/ckupload/files/vukiro.pdfIn PDF document text
    • https://nhatngudongkinh.phapluatvietnam.com/upload/ckupload/files/22023073752.pdfIn PDF document text
    • https://k31szmq42-nu28.com/contents/files/xunanorigavonitawosomadu.pdfIn PDF document text
    • http://www.ap-arte.ro/fckupload/file/98992223829.pdfIn PDF document text
    • http://sostrevalli.it/userfiles/files/63996402797.pdfIn PDF document text
    • https://quanticabtl.com/cms_2018_quantica/sgi_userfiles/userfiles/files/44310597491.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/433b5d58fcd5134a3a7028d57997dba7/vugavamefipubiruru.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16140ea45b5ce3---61285665369.pdfPDF link annotation
    • http://suachuaspa.com/upload/images-content/files/28843287244.pdfIn PDF document text
    • http://energy-labels.com/userfiles/file/tuxepegabivarat.pdfIn PDF document text
    • https://zilalcooling.com/other_files/File/69542550088.pdfIn PDF document text
    • http://www.humillacionyestrella.org/ckfinder/userfiles/files/dotoliwatogu.pdfIn PDF document text
    • https://phatgiaolongan.com/upload/ckupload/files/75995591244.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613df1f47eacc---vutanotovesemudubig.pdfIn PDF document text
    • http://nobody-films.com/bpms/includes/fckeditor_uploads/userfiles/file/22663585838.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_off0001122c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1122C 17988 bytes
SHA-256: abd5b93139e3c353b69379baa2dbbd0d86753499e5c29b2abfc6820ba79698b3
font_01_sfnt_off000140ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140EE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15905 11172 bytes
SHA-256: aad3e399ebf8115fabeebec4adc572817873107aa708306ca72f023106431622

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