Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d38a5a3c137d49e…

MALICIOUS

PDF

33.3 KB Created: 2020-08-04 13:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 811e8e6e098550e3097497f9d86c286b SHA-1: f46d4e43c61f0759b846e037957d8c4165ad7b54 SHA-256: 7d38a5a3c137d49e51ddb3deb5bd0383c0ab6e401236c8e2c6f0a4935e5a5805
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=colloquial+english+gareth+king+pdf'. The document body also contains this URL, suggesting it's the primary lure. The presence of numerous external PDF links further supports the SEO link farm heuristic, indicating a likely phishing or malware distribution scheme. No scripts were extracted, but the malicious links are sufficient evidence.

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=colloquial+english+gareth+king+pdf In PDF document text
    • http://files.shopthrillvintage.com/uploads/1/3/1/8/131871535/3709026.pdfIn PDF document text
    • http://files.crewsheatingandcooling.com/uploads/1/3/0/8/130874160/lanabazelirevapopi.pdfIn PDF document text
    • http://files.libertylifeyoga.com/uploads/1/3/0/9/130969446/d239da.pdfIn PDF document text
    • http://files.wmswolvesband.com/uploads/1/3/1/1/131164198/padixagemuzun.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/1/0435/8114/5243/files/dolikesudufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5586/6263/files/41426446673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7401/0782/files/bewazofaxitanerasijarudem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3993/8970/files/writing_numerical_expressions_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2458/7672/files/57618422515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6605/7116/files/pejiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9689/0785/files/43705376684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2215/3890/files/tidefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2834/8060/files/millisecond_to_hours.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3137/9619/files/mugeded.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32505595602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8059/7152/files/zedoserejizejowe.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 5

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_off0000455e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x455E 5400 bytes
SHA-256: a119dab2e4c2b2b6632e1ee78f0866ed09238cd831683b3f6841c39c1f4d7221
font_01_sfnt_off000057a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57A9 9516 bytes
SHA-256: 4c27c92aae7a6ebfea0d615640166cbe0cb9ea4efe028e0ed07026b09da7dea0

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