Malicious PDF — malware analysis report

Static analysis result for SHA-256 478a1c32988c76d7…

MALICIOUS

PDF

37.9 KB Created: 2020-07-26 12:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f7112fca051fa43ebd2ce6f43da723b SHA-1: 90f65b3a867f6742f09fc81a15996fed803bf48f SHA-256: 478a1c32988c76d79969b0e94ee58ea76bf287876bac3f3561b18fb4f0d0ce5e
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is part of a link farm strategy. The document body, though heavily obfuscated, contains keywords related to the embedded URL, suggesting a lure to generate traffic. 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=picsart+background+images+full+hd In PDF document text
    • http://files.charlottedixon.net/uploads/1/3/1/4/131453249/xufite.pdfIn PDF document text
    • http://files.grandmaceilshouse.com/uploads/1/3/1/4/131408529/92347f03614c5.pdfIn PDF document text
    • http://files.mittensforkittensrescue.com/uploads/1/3/0/8/130874614/97f413b52003.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/1/0432/1656/8482/files/91317904351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7623/9014/files/27452315800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7860/6229/files/mojonogatapojikagelugixep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/51057407461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/54158247274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/72659330887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/vitabovanibev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/47947096109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8648/6440/files/negajegadebig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3502/3770/files/46182728197.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 8

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_off00005b6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6D 5520 bytes
SHA-256: bf3910535e60e91778872a10faf68f84968616e4ab1efa76793560e3674b5a04
font_01_sfnt_off00006df7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF7 8492 bytes
SHA-256: cf2179052703e85d61564b3266a2a4c8f1e4a29b8587d8a52aa01ede8a3c6d98

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