Malicious PDF — malware analysis report

Static analysis result for SHA-256 d16fe2919bee31b3…

MALICIOUS

PDF

42.0 KB Created: 2020-08-27 13:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e5eb692b45f2c3454a2a0b3c86641d8 SHA-1: 1ddb1e9395c63f2934f65403b2ce4be38d62871f SHA-256: d16fe2919bee31b310a1263ca4c1b8e0aa4142ac2ecf33cfb1a028be604106a0
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1598.003 URL/Domain Information: Link Predication

The PDF contains a malicious redirector link and a large number of embedded links, suggesting a link farm or SEO manipulation tactic. The document body text, though garbled, contains the phrase 'weare transfer station hours' and a URL that aligns with this theme, indicating a lure. The presence of a callback phishing lure heuristic further supports the malicious intent. The primary malicious IOC is the ttraff.link redirector.

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.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.link/pify?keyword=weare+transfer+station+hours In PDF document text
    • http://goxex.bakingwithbugz.com/uploads/1/3/1/3/131379174/xosewal.pdfIn PDF document text
    • http://files.creativityandperformance.com/uploads/1/3/0/7/130776594/jopake.pdfIn PDF document text
    • http://files.freshsage.com/uploads/1/3/0/7/130738701/4291679.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/1/0434/7396/1125/files/free_bible_nkjv_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3903/8360/files/fallout_shelter_achievement_guide_steam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3514/7933/files/fisiopatologia_de_la_cetosis_bovina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/26448431908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6528/6564/files/8872825400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/72583874528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5359/4277/files/nuzalusowugemetizume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0426/2561/files/49766163169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5820/7643/files/xeludewobupib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7637/8773/files/eia_natural_gas_storage_weekly_report.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 3

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_off000066db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66DB 4836 bytes
SHA-256: 8a33a7db0d7e049a6c45dc91a01893862459727e95aaaa69935c3e47e75c6175
font_01_sfnt_off00007751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7751 10676 bytes
SHA-256: b893ddd27e11028f34ef7edfa10fa61995aa8f321eb9e48f00135e0c5e521d7b

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