Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0779ecd4e6fc71e…

MALICIOUS

PDF

40.5 KB Created: 2020-08-24 21:00:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b5f365e5c6e6b97c83a3d6aaf089ff26 SHA-1: 8245c7137f6890d94a04a3fbbf03468ae8504551 SHA-256: c0779ecd4e6fc71e4bcb29b0a424a7bc45b6d5ded9a01fcc2701acf9c016907b
202 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=baixar+whatsapp+para+android', suggesting a lure to download an application. The presence of a link farm heuristic further indicates a malicious intent to distribute content via numerous links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=baixar+whatsapp+para+android In PDF document text
    • http://gumovum.wendysintoenglish.com/uploads/1/3/0/7/130739664/124809.pdfIn PDF document text
    • http://silugurip.crawfordphoto.org/uploads/1/3/2/6/132695478/gomegobewe.pdfIn PDF document text
    • http://files.epgxc.com/uploads/1/3/1/4/131438567/9927068.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/1/0431/0587/8170/files/nidosazukirixexisekavew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4605/0714/files/92698974681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0935/1585/files/vaxijula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4561/6792/files/mataji_aarti_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8784/5790/files/adding_subtracting_and_multiplying_polynomials_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7848/3097/files/mathematical_physics_by_satya_prakash.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/69278686292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2823/3885/files/71553124048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4836/1375/files/vumekurezozesoriw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/lelisotegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/zotemilotogosim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/56292942639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8632/1566/files/rovevavavofujevuvuzo.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

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E52 5224 bytes
SHA-256: 76893fcee359c17173b062c113e01ff4e60b1e0942bdb8dde85ed9a3522b6d45
font_01_sfnt_off00007023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7023 10984 bytes
SHA-256: 822202222b677743de5dfaf2430a38074e8c55cb529dd8a3e97c3981f02cd07c

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