Malicious PDF — malware analysis report

Static analysis result for SHA-256 62189880ca1672ea…

MALICIOUS

PDF

80.1 KB Created: 2021-07-21 01:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 0c13f13646dbe724ef472e9af148fd5e SHA-1: 1010a6d6e3a8b41e7e3fab71950cc78374375ca5 SHA-256: 62189880ca1672eaa8804f2cae89be98789da2ad07540756bcbe9a9e1ecd7c86
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a callback phishing lure. It contains numerous links to compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content. The document's structure and embedded links indicate a pattern of distributing phishing content, likely aiming to trick users into initiating contact with threat actors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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.
  • 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 http://naasschoolofmotoring.ie/fckeditor/userfiles/file/81431984246.pdf In PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608226e283fba---27109744578.pdfIn PDF document text
    • http://niestachow.pl/data/aktualnosci_imgs/file/92796734195.pdfIn PDF document text
    • https://aslimitada.com/userfiles/file/22429409220.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/fa16af5320e2597c2af0285021a30e58/31665165666.pdfIn PDF document text
    • http://kengosushionlineorder.com/uploads/files/37357406247.pdfIn PDF document text
    • http://pileshoppen.dk/userfiles/file/64340203333.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/99759561c3be3790e1fb9ec944439b5a/fajijadopixopuxilijamub.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/56246640154.pdfIn PDF document text
    • http://flexicourse.cz/res/file/mugotiru.pdfIn PDF document text
    • https://leresto-niort.fr/images/userfiles/files/potus.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16072463a323f5---zonizixowuzumulix.pdfIn PDF document text
    • http://xn--80aafbanafwvcftiqfecrg2a.xn--p1ai/pict/file/95712933116.pdfIn PDF document text
    • https://egyptsuntours.com/userfiles/files/kopikekemupanuradetopi.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/793f41bb05e65ac15d7f520b5e999bf4/bipanifujifuburiwilizad.pdfIn PDF document text
    • http://logansport1971.com/clients/4/42/424235dfd0fdcd2d3cc2afd1e16bb83e/File/53607113125.pdfIn PDF document text
    • http://dothi.info/images/files/52847803276.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/7jcnd5ekd8ns97a13efe8psmui/gubaxenikogizalekep.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/kudunenesenib.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/1e5seg7nkg6lruige566q90uhf/kinitawidifalawunitu.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/77fo0epi91uroj2ep53ijl55sg/34097431402.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6692b81fe---tosevefebatiduduxaridu.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/9ba96a0e9197b3e0fa7f60e32ed64c49/tonupoxegurogupitujaw.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16071dfeb184bd---82193333254.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/8403094db612b005e9b8baeaaa1a82b2/90827072723.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=kate+tempest+hold+your+ownPDF 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_off0000d329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD329 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eb40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB40 10856 bytes
SHA-256: 90007f59c8c3cc2ee7c66c41b00d0f361b428049b3d0dcfc4d9dcb6547778e47
font_02_sfnt_off00010439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10439 17464 bytes
SHA-256: 06beb5f70b5edde62cd085d63ddee29981a473958d7bcb8de05a5dbf759bbabe

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