Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d0fe4f60e2bfbac…

MALICIOUS

PDF

86.6 KB Created: 2021-09-14 02:15:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 3cc86c2668c6d480c7e9788971955a19 SHA-1: 571268680f8888ce59c1ee72a9687b7b75bb6e77 SHA-256: 7d0fe4f60e2bfbac7a62ff0f165ddc81c852a8ae98a7933e5e09dca5cc056437
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, forming a link farm. The presence of these links suggests an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://vico-inmobiliaria.com/ckfinder/userfiles/files/78041310951.pdf In PDF document text
    • http://naplesredeals.com/userfiles/files/xaxinidemu.pdfIn PDF document text
    • https://intekcanada.com/ckfinder/userfiles/files/34823602394.pdfIn PDF document text
    • http://4seasonstours.in/userfiles/file/7799198686.pdfIn PDF document text
    • http://imhkayseri.com/resimler/files/zusepixogazitipasoja.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613513cf036e9---15809995078.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1613fc380240e9---lobojanaxone.pdfIn PDF document text
    • http://aristosaigonhotel.vn/uploads/files/20027003386.pdfIn PDF document text
    • http://aprt1day.ru/file/40466068426.pdfIn PDF document text
    • https://morethancars.eu/uploads/edytor/file/57699454852.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613067f7266b7---54033980076.pdfIn PDF document text
    • https://trouver-une-ssii.com/img/pics/files/gudukorazariniberiloneme.pdfIn PDF document text
    • https://shoppingplanet.cityplanet.ro/ckfinder/userfiles/files/solumumi.pdfIn PDF document text
    • http://mutamobilya.com/images_upload/files/99699796813.pdfIn PDF document text
    • http://hissekurban.com/resimler/files/pubeximuroganoja.pdfIn PDF document text
    • https://itscebu.com/upload/file/20210910092356.pdfIn PDF document text
    • http://taxplus.in/images/contentimages/files/52047795115.pdfIn PDF document text
    • https://arrad.ch/modules/ck/ckfinder/userfiles/files/55334091288.pdfIn PDF document text
    • http://netichikawaya.com/userfiles/file/81576845915.pdfIn PDF document text
    • http://bearings-home.com/userfiles/file/votuxijotupapidizonirejit.pdfIn PDF document text
    • http://aasghsflqsae.handylover.com/upload/files/kiwomomugijakenufub.pdfIn PDF document text
    • http://ingfrimale.com/userfiles/files/11262637116.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613921ec9e255---misafomurik.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/79ca1e235e1585f2c4852b3104994730/ropolelamolirobabadalevaf.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138b1ed1ba86---madalosipujitazam.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613011ffc7b61---xewapadazulubezinobenugez.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=car+parking+multiplayer+for+androidPDF link annotation
    • 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_off0000eb5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5A 18176 bytes
SHA-256: 935556566af272ad60d8b3d504b4911d4d733a8680fb4cca1009e137a27a5740
font_01_sfnt_off00011aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AED 11008 bytes
SHA-256: 5b7d69205fa4c62026f326b722d5c70ed97abffc693b0c475bcbea15489403c4
font_02_sfnt_off00013457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13457 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.