Malicious PDF — malware analysis report

Static analysis result for SHA-256 e501ecb89abfcc44…

MALICIOUS

PDF

40.1 KB Created: 2020-08-05 15:07:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c3e7949be97d72a927199c62aa65599e SHA-1: e0b18fd26a3a1411244e6c36641888807d3c2b24 SHA-256: e501ecb89abfcc4489681911b0eec078d330021f4f4d0a4f14af4e3acc1c4fb9
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains references to 'Lonely planet japanese phrasebook pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise malicious content. The presence of a link farm further supports the intent to drive traffic to potentially malicious sites.

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.ru/pify?keyword=lonely+planet+japanese+phrasebook+pdf In PDF document text
    • http://files.syrianamericanclub.com/uploads/1/3/1/1/131163867/loxofajexesafuwo.pdfIn PDF document text
    • http://files.proformancecombatsports.com/uploads/1/3/0/8/130873944/wapezuzatas-luxatuxotisu-gukitowip.pdfIn PDF document text
    • http://files.sturgeonriveroutfitters.com/uploads/1/3/1/3/131398154/35e6b7.pdfIn PDF document text
    • http://files.ucvillagegarden.net/uploads/1/3/1/4/131483147/5440292.pdfIn PDF document text
    • http://files.scotiansup.com/uploads/1/3/1/1/131164152/fejasenajorox.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/1/0437/9102/4280/files/30243314190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4219/3058/files/86639341478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/see_you_again_lyrics_no_rap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9970/0889/files/john_deere_gator_6x4_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6670/3516/files/75084201028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4050/4999/files/cctv_camera_installation_tools.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/wawaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/jesurupuwirepaloba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0386/2440/files/2659271016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5674/3079/files/lapuwafafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7641/9744/files/34791360371.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_off00005e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E93 5452 bytes
SHA-256: a667c05e77dc9e902d76d48eddbc4ffa61fe9cf138ba320ff7eb1f2d3e35876d
font_01_sfnt_off0000711d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x711D 10088 bytes
SHA-256: a3f3ebcc2d5fc2e5b9441269c5d60ef548ae48f56e1ca67d007d9fbe7396f960

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