Malicious PDF — malware analysis report

Static analysis result for SHA-256 898caf06d86c5edd…

MALICIOUS

PDF

46.0 KB Created: 2020-08-08 05:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fdc25b830afbf686c483d6fa21dd2155 SHA-1: 6a46d4af252b5d0b09c3b28d0a87f420d1473f68 SHA-256: 898caf06d86c5eddc9bbd4c0f83436af69b5c7f6029049782201af6b4fc35fd2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body and heuristics indicate a lure for a 'free textbook pdf', suggesting a phishing or scam attempt. The presence of multiple Shopify links, some benign and some potentially part of the link farm, further supports this. No scripts were extracted, but the primary attack vector is the malicious redirection.

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.com/pify?keyword=exceptional+learners+textbook+pdf In PDF document text
    • http://files.scrantontennisclub.com/uploads/1/3/1/6/131637178/8631895.pdfIn PDF document text
    • http://wosad.guzmansdancestudio.com/uploads/1/3/1/4/131452883/19f6827bf3bb5.pdfIn PDF document text
    • http://files.mytoepro.com.au/uploads/1/3/2/7/132740930/82e39d61.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/1/0432/0080/7070/files/tawowovulixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1440/5793/files/tubiwirugavalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0352/5794/files/shenkuu_lunar_temple.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8176/7841/files/gju_msc_math_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2395/6125/files/batamajukepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8844/9437/files/blender_3d_cycles_rendering_engine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7962/files/19963159445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1960/6936/files/6344116355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9390/8892/files/2006_honda_rancher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7817/3343/files/tatemamaketazapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1603/6257/files/nagak.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 6

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_off0000668a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668A 5164 bytes
SHA-256: 484b1dedae9ba19e4b900333c759913b1310a1faa3d4c784530088c2c0160207
font_01_sfnt_off0000780d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x780D 10928 bytes
SHA-256: 9856172d58096893cda0bbe921a2cfe18c79a03ea7c0435080ad332e319dad3f
font_02_sfnt_off00009d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D2A 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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