Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b39db55dd0466b4…

MALICIOUS

PDF

41.5 KB Created: 2020-08-01 20:02:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0d572b5364380336007bbcb1a8add94c SHA-1: ed44fae50a67843f3801fe0fad2b599b2f25b0d1 SHA-256: 6b39db55dd0466b421bf9e96480715e0a9328f483e3232a257932e2c59502aea
234 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to redirectors and SEO link farms designed to obscure the final destination. The primary redirector, 'ttraff.com', is flagged as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure for a song download, suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=john+legend+stay+with+you In PDF document text
    • http://files.warriorsfastpitch.com/uploads/1/3/1/4/131409526/9201649.pdfIn PDF document text
    • http://files.nickbridwellwriter.com/uploads/1/3/1/4/131406811/tabamulumuxuzodif.pdfIn PDF document text
    • http://files.southshoreeldercareconsultants.com/uploads/1/3/0/7/130776031/31b38c5e26842.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/1/0431/3438/6332/files/kifedexurotogobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9665/4499/files/pawebolupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/xufopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41877136991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5680/6565/files/zofijamagiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6187/7663/files/41640811937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2503/8497/files/nimawod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0989/1742/files/77892107898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7689/3334/files/jabozevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2970/6390/files/77331571098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7001/3086/files/nodegisiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96512150342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1746/9086/files/60640447089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/31646847799.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DE 5176 bytes
SHA-256: 157c50450880cf22abea599224c1a2b67ed7f860e016dc55529bbf8b8bfdaaaa
font_01_sfnt_off00007688.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7688 10088 bytes
SHA-256: 0563eeae70659045b0744f2a53edfede234077a52eccb4a7c1e69c7d4b63a4f9