Malicious PDF — malware analysis report

Static analysis result for SHA-256 13b275a430e9c805…

MALICIOUS

PDF

49.5 KB Created: 2020-07-31 10:37:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a190339ef779a54e78fe01f7b883e12 SHA-1: bf8c6ae3e62e9abe8e3dc62a2cf44633882efbfb SHA-256: 13b275a430e9c805c78484f6f6326332ed8f1896c3b3c55dba063a63978b914a
194 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to redirector infrastructure, specifically 'ttraff.com', which is flagged as malicious. It also hosts a large number of external PDF links, suggesting a link farm or SEO abuse tactic. The document body, though heavily obfuscated, contains keywords related to the PDF's purported topic, likely as a lure.

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=androgenos+y+estrogenos+pdf In PDF document text
    • http://files.drenzidesigns.com/uploads/1/3/0/7/130776529/191867dad0.pdfIn PDF document text
    • http://files.phase2fitness.us/uploads/1/3/0/7/130775655/57025462.pdfIn PDF document text
    • http://files.thelarsenflutestudio.com/uploads/1/3/0/8/130814902/tupas_mejirefoxa.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/1/0435/0961/2712/files/gapez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/rapovevifuduwotakenubobik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/zabutere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/39116226844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/55851916306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4111/1707/files/pewunufaweputo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/ravijiwewedimowoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4356/8278/files/82866338259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/92674661261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/dezupipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/39405997328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/xuwenime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6555/7671/files/xumonosugugivulonemige.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 2

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_off00008186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8186 4800 bytes
SHA-256: 12b68ad58d0b12256d48690c6b114221887a9498bc8d67f222a661605e270d12
font_01_sfnt_off000091e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91E8 11532 bytes
SHA-256: c7aee439b9d4b194109b8b30de58abf5a3cbe0c60bcaf483a7531466e14d6334

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