Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d236b6f1063256e…

MALICIOUS

PDF

73.6 KB Created: 2020-07-31 14:24:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fde5f86906ed83b101ebfcbe50529ef4 SHA-1: cae717678c490ec3b299dba13d62ddcff3ca9af5 SHA-256: 8d236b6f1063256e26563b4d2a90a9d50057672fef92eff21220a56df29ab343
194 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.cc'. Additionally, it exhibits a PDF link farm heuristic, with numerous links hosted on cdn.shopify.com and other domains, suggesting an attempt to distribute content or lure users to malicious sites. The ML classifier also strongly flagged this PDF as malicious. 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=warhammer+40k+codex+pdf+space+marines In PDF document text
    • http://files.gronigerknives.com/uploads/1/3/2/6/132695663/verebekogufoz-gizifakifo-dimevidope.pdfIn PDF document text
    • http://files.crosslakerental.com/uploads/1/3/1/1/131164295/2db0ed8.pdfIn PDF document text
    • http://files.joeantoshak.com/uploads/1/3/0/7/130776599/329837f66.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/1/0434/3883/3816/files/fuwiwijisijimeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0123/3053/files/82500846256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9583/4280/files/46287132645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/73124138235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38967404473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9534/9666/files/lasivozezibexesezanola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tipibag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7886/7354/files/mazazupegedinukaxevexazex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/munin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8782/1984/files/teluzutazixem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2211/3192/files/kunoliwef.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_off0000e3ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AB 5448 bytes
SHA-256: 876348365447ae37f7ed22b32e2cb3977569b96a6ea6225b697924d5aec9945f
font_01_sfnt_off0000f613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF613 10256 bytes
SHA-256: 75a896166ea523b0236aca5d7ed326b15cc6f9df3adf1f8c30df5e3336ad6904

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