Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5ac73130d83602…

MALICIOUS

PDF

47.8 KB Created: 2020-08-01 18:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32a88959c2515520e2320d651e188538 SHA-1: 0aa207934b110b5798cc2929a8ea6f4a89861485 SHA-256: 7b5ac73130d83602e91edea186d567eb3aa3925d9cdb83580f5111ab9e4be8c5
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body and embedded links suggest a lure for free content, likely a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the presence of numerous external links points towards a link farm or redirection strategy.

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=simple+html+game+code In PDF document text
    • http://files.heliosphotomedicine.com/uploads/1/3/1/0/131070080/c6d20501c7cb8b0.pdfIn PDF document text
    • http://files.matrixalgorithmsinmatlab.com/uploads/1/3/2/6/132683181/rimojed-boferer.pdfIn PDF document text
    • http://files.christ-presbyterianchurch.org/uploads/1/3/1/4/131483108/sezubipapojibip_rowogefakej_tixap_wubedefevaxila.pdfIn PDF document text
    • http://files.barch.com/uploads/1/3/0/8/130814605/xukafi.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/1/0434/7697/5768/files/98344849333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5377/7047/files/zugubepipok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5943/0054/files/masesadubor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2678/4157/files/rutetasepifupav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/zanofenogesekedaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9105/0137/files/73472942915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/mijaxepijanofutorireridu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94766401197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8910/7869/files/65646007202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6903/1078/files/90019964167.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_off000062c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C4 5316 bytes
SHA-256: 5e55706489d491707e68525a209fc994810fb21c00d2337664b5069470f5e717
font_01_sfnt_off000074ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74AE 21772 bytes
SHA-256: 3ce7d3ceeccd846f833e34f931d63e068bdb13f3a18e5ee2dea761609e5a5142

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