Malicious PDF — malware analysis report

Static analysis result for SHA-256 c354819896310431…

MALICIOUS

PDF

42.7 KB Created: 2020-08-12 18:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d60c7df1eb93734f7e519db314f6133 SHA-1: f66ebfab134de4f16775a8e590d0ba214655e15b SHA-256: c354819896310431ab28c86964ffc3ed5f5a6e48b142b3f9102a761778138c0e
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL and a reference to 'interesting facts about human body pdf', suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely to improve search engine ranking for the malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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.cc/pify?keyword=interesting+facts+about+human+body+pdf In PDF document text
    • http://files.samanthagagnon.com/uploads/1/3/1/3/131398372/58a964.pdfIn PDF document text
    • http://files.diymandalastones.com/uploads/1/3/1/4/131454024/dixedizun-nilig-xipulalokuwat.pdfIn PDF document text
    • http://files.bmemf.org.uk/uploads/1/3/1/0/131070894/073def.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/1/0435/5463/5937/files/como_convertir_de_a_word_con_nitro_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9496/2332/files/72787149936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0698/3335/files/15759877873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5549/6866/files/dapofamezozobarimifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4578/9606/files/solve_equations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7881/8715/files/39224231761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/coran_bilingue_arabe_franais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6259/9585/files/nezenudetolukigafid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/patient_information_sjogren_s_syndrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/40331156416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/durinezojafiregagoputora.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 4

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_off000068cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68CB 5716 bytes
SHA-256: 1222988b36451756b123712f36bb5613c02081de3eb4b10c055129b344859957
font_01_sfnt_off00007c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0D 9912 bytes
SHA-256: 8797524f3c2da85e3ff3bec4398ce9c96de6f94d51f78606a5f7cfb83f90e5b0

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