Malicious PDF — malware analysis report

Static analysis result for SHA-256 0249ce90ecfc69a3…

MALICIOUS

PDF

64.3 KB Created: 2021-10-01 08:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 0317dccba99d76844c75200f56debb6f SHA-1: 4f89f534789eac4d0e7ef97963126508b8cfd523 SHA-256: 0249ce90ecfc69a3ec7da370c45e5477b6811a84c9be52f444701592f39c2ba1
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF is identified as a phishing lure due to its structure, containing minimal text and a single image, typical of a screenshot designed to trick users into clicking. It contains numerous embedded URLs pointing to disposable domains, suggesting a link farm used for distributing malicious content or phishing pages. The ClamAV detection further confirms its malicious nature, classifying it as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3110

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 64 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://drafthe.ru/uplcv?utm_term=the+power+of+your+subconscious+mind+pdf+full+book PDF link annotation
    • http://tsradviseurs.nl/mailing/images/photo/file/40657210321.pdfIn PDF document text
    • http://arisutour.com/ckupload/files/ruzotuzat.pdfIn PDF document text
    • http://4darchitecture.org/img/all/kuxavixaviki.pdfIn PDF document text
    • http://saktigroup.in/uploads/23530189214.pdfIn PDF document text
    • http://ark-mr.com/data/home/qxu2063190031/htdocs/uploadfile/files/410817784.pdfIn PDF document text
    • http://dailymaydemtien.com/userfiles/files/17296950172.pdfIn PDF document text
    • http://teusz.pl/UserFiles/file/25915674140.pdfIn PDF document text
    • http://linuxnewyork.com/draft/media/3116048347.pdfIn PDF document text
    • http://kisito.com/userfiles/file/68435576128.pdfIn PDF document text
    • http://media-production.net/admin/ckfinder/userfiles/files/buperivebumawa.pdfIn PDF document text
    • https://webhosting4.net/media/file/58027760598.pdfIn PDF document text
    • https://hanyauntuktesting.com/contents/files/ruleledizisajotejofiba.pdfIn PDF document text
    • http://candientuvibra.com/images/file/soxoredelokusilitira.pdfIn PDF document text
    • http://kxqcgs.net/filespath/files/20210907110350.pdfIn PDF document text
    • https://halkum.rs/files/lotom.pdfIn PDF document text
    • http://etpatatietpatata.com/userfiles/files/nodowakomamokubikikig.pdfIn PDF document text
    • https://xn--z4qq44i.xn--kpry57d/upload/actfiles/94692549910.pdfIn PDF document text
    • https://ecoquimica.cl/dinamicos/uploads/file/91673622087.pdfIn PDF document text
    • http://mazraeir.com/images/upload/files/58048750298.pdfIn PDF document text
    • https://kimtuong.vn/isc/public/files/fckupload/file/57805812906.pdfIn PDF document text
    • https://futuresbuilder.net/dayafter/uploadimages/newsimages/file/54708411059.pdfIn PDF document text
    • https://ristovski.mk/public_html/upload/userfiles/file/xatilatofedave.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/ndrmo3eb1n3s8qrpj84eu3dig7/41993320503.pdfIn PDF document text
    • http://domesticsolutionsagency.com/userfiles/file/63213882787.pdfIn PDF document text
    • https://christianklein.eu/Quansis/ckfinder/userfiles/files/34342187937.pdfIn PDF document text
    • http://agilesolutions.in/uploads/sipepofesubukejisorew.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b2a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2A2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB4 14420 bytes
SHA-256: c7e1d2b486f0f583e3b00be389bbbaf4f05474a60805f3f063d2af1a6f3bc01c

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