Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1612fd682c76f7c…

MALICIOUS

PDF

40.3 KB Created: 2020-08-24 12:48:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f41a70c35e1128b0f3d607f17c91348 SHA-1: 5ae4ba90e9150ffbe56d6364632d2dbcbf6b55bb SHA-256: a1612fd682c76f7c03e09130e11fa68127f0cdd8ebb8d0399e7216efa256c61e
234 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, embedding numerous external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a 'Password-protected archive lure' heuristic suggests this PDF may be a precursor to delivering a password-protected malicious archive.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.com/pify?keyword=criminal+movie+songs+ringtones+free In PDF document text
    • http://files.werotary.org.uk/uploads/1/3/1/8/131856435/458005.pdfIn PDF document text
    • http://zuremubo.yellowheadauctions.com/uploads/1/3/2/6/132681579/fobowiroxubulito.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/1/0436/3033/0019/files/berthold_akzidenz_grotesk_light_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3279/7607/files/gazopeziranonugupidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3865/2069/files/3406945279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2107/2546/files/how_far_does_water_fertilize_in_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/ethical_considerations_when_conducting_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8259/6000/files/ffxiv_triggernometry_triggers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6515/5489/files/new_headway_beginner_4th_edition_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6213/2897/files/dimenipirubokix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9054/1728/files/jumijafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8088/4129/files/vimibipa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000610f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610F 5052 bytes
SHA-256: 5de36247aea4d3c82df5e54424b1a7bafc50fbc2ac8c4d012ebf92650213083c
font_01_sfnt_off0000722a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x722A 10076 bytes
SHA-256: e78d9fc9dc84d459c9fa2946d1a88a34163550f9c6c7b2eea27f483ece8bfb4a

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