Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f9d06f69a9102ba…

MALICIOUS

PDF

268.7 KB Created: 2020-08-14 18:47:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9762f4a315a8348bc9b8a78f8d26a20e SHA-1: b5fc6358644898dea73ef7dffd59f42a39b34eca SHA-256: 4f9d06f69a9102ba8cd350500951d41ba19b3cb8ad2eed4143b2a448319d7d78
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=european+society+of+cardiology+guidelines+pregnancy'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The heuristic 'SE_URGENCY_LURE' further supports the phishing pretext. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ttraff.ru/pify?keyword=european+society+of+cardiology+guidelines+pregnancy In PDF document text
    • http://files.haymountrehab.com/uploads/1/3/1/6/131606360/jasiwawe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9237/6741/files/41809814583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2565/2136/files/curtain_wall_installation_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1098/0000/files/33706495053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/emirates_first_class_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0090/files/lodikolasaboxala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4625/6295/files/97324590222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7586/1656/files/i_love_dad_with_the_very_hungry_caterpillar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7219/2669/files/6911186025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5298/9605/files/24536159502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/nojojogoxuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/chrome_filehippo_32_bit_offline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5251/2918/files/leading_by_example_quotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0315/8433/files/toxuturotuvopimefisejagef.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003c867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C867 5384 bytes
SHA-256: b8c09e6620b28e0a6bc643ef8da2c391f730c82248a4b200e3c006262ab08f77
font_01_sfnt_off0003dad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DAD8 16540 bytes
SHA-256: 7d483917b36407b61dd1dbeec449160674c679c261a28d4f3c98d54db0fa0072
font_02_sfnt_off00040ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40EAD 16148 bytes
SHA-256: 49436f94d5abf10ca6af8af9848174aab82dfe7bc58a5146411d238fd5c76648

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