Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7d0ee058732f840…

MALICIOUS

PDF

85.3 KB Created: 2021-07-04 23:15:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 133e7bc76bf877460e7875f151727293 SHA-1: 5499c821f6fe01b9d6ccda8cf0be4a7fd710e8c1 SHA-256: d7d0ee058732f8408deb89f3d783a31b8ee99a06bc515d6b84abd3cdbd09482f
196 Risk Score

Malware Insights

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

This PDF was identified as malicious by a machine learning classifier and ClamAV, with high confidence. The document's structure and embedded links indicate it is part of an advance-fee scam, likely designed to trick users into downloading further malicious content or revealing sensitive information. The numerous links to compromised WordPress upload directories and disposable hosting further support its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • 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://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16074012474c1e---gipazoxaduwozanezerales.pdf In PDF document text
    • https://terminal.hr/userfiles/file/lodibebimagivunaza.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/572cd2fd1a7b245a8737c92ed0fe0be4/wusute.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/92345c7e888c610175f2d07f13d6456f/12936948111.pdfIn PDF document text
    • http://jevades.com/aircraft/fckimages/file/pulubaxoborazo.pdfIn PDF document text
    • http://cheers-gifts.com/userfiles/zitogosaku.pdfIn PDF document text
    • https://pergamine.com/ckfinder/userfiles/files/93386969485.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bbf09f56663---79518762285.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d356df2220---400241588.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/pdm5badiebclmdmjld4e6ur2c2/doborabezepegowase.pdfIn PDF document text
    • http://whs1979.net/clients/65916/File/21561789659.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/3pp78sb36jq4mv3d9csjtt2qo5/32407234478.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c782d8e7672---bopaburop.pdfIn PDF document text
    • http://sns.hu/_user/file/sobisiwobemidupamilogij.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160995203d7b2e---rolatozelopadikanabo.pdfIn PDF document text
    • https://giga-tronics.com/userfiles/files/devunowexafesevam.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e8bdcba433---xibodidujomovesafula.pdfIn PDF document text
    • http://anaminfo.com/attachfile/file/49609247986.pdfIn PDF document text
    • http://ipsgroupjjn.org/userfiles/file/dufukodilu.pdfIn PDF document text
    • https://gelblighting.com/userfiles/files/wijekeni.pdfIn PDF document text
    • http://pallenberg-busreisen.de/uploads/files/zivobel.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab45a84e079---tumuw.pdfIn PDF document text
    • http://iuf.kr/pds_down/files/kizimepowepopitexajojus.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/9c8403a8350739fa160b852831757ac3/55098593663.pdfIn PDF document text
    • http://bpabv.nl/uploadfiles/file/77467135697.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/131a1fbbfe08f03c736f02268a857ee7/gepanugipamibadosero.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=county+shelter+near+mePDF 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_off0000eca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA7 16576 bytes
SHA-256: 2672f787a453b6e1175edffe942f345e3113a7c147d97064ba5ae96cd3f3d2d1
font_01_sfnt_off00011800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11800 10524 bytes
SHA-256: 2d8d5b1bb6cae7d54cb2301fa0516b9ea2c4c6f96ea3406449db1e83e98a17c8
font_02_sfnt_off00012fe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FE8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1