Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35a1df37adfc2a5…

MALICIOUS

PDF

40.6 KB Created: 2020-08-18 16:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e57c4011774c59ab89cebbe560ae1bba SHA-1: c97d346f81f21bcb417e226250b31ad0f2f2cd94 SHA-256: e35a1df37adfc2a559c7572d110a755cc42fbc3d434ec3d390663c35ed349c26
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector (ttraff.cc) that is disguised as a free dictionary PDF. The ML classifier strongly flagged this PDF as malicious. The presence of multiple embedded URLs, many pointing to Shopify, suggests a link farm or SEO poisoning tactic to attract victims. The primary malicious URL is https://ttraff.cc/pify?keyword=english+to+tagalog+dictionary+free++pdf, which likely leads to further malicious content.

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=english+to+tagalog+dictionary+free++pdf In PDF document text
    • http://files.westcountryhearthattack.com/uploads/1/3/1/3/131383456/1564507.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9800/3874/files/case_580_backhoe_operators_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/close_to_you_carpenters_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6064/8343/files/55040112031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4374/7990/files/wavivaxukafudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9423/files/losse_bestanden_samenvoegen_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/balojewibukotitefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4214/3397/files/reason_10_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1818/1013/files/zidor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/58454911366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/square_and_cube_numbers_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8847/8365/files/docker_for_windows_10_home.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 1

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_off0000522a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x522A 5264 bytes
SHA-256: a06cd921aa8478655bbf0ce22653e2ed3a465ec0bc3756806c57b29fbe6cfcdd
font_01_sfnt_off0000640b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640B 10360 bytes
SHA-256: 27fc7bcee2a8c938467ce6999dcb12d911a5e3a3f7f4516671831e09f9cd25fe
font_02_sfnt_off0000877d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x877D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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