Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf950d44e825c122…

MALICIOUS

PDF

42.8 KB Created: 2020-08-12 16:58:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5068aa3c5a5e8cc6df915c57f76f1c39 SHA-1: bbd4bea1d061af35577a7b178c419544b1b8d82f SHA-256: bf950d44e825c122af9a3008d6758e92b93cce383636924964145bf80cdfa615
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and text suggesting a lure for a 'house rental agreement'. This indicates a phishing attempt where the user is tricked into downloading a file that redirects them to malicious infrastructure.

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=house+rental+agreement+format+in+english+pdf+free+download In PDF document text
    • http://files.northjeffersonrepublicanclub.com/uploads/1/3/0/9/130969577/9e8006fa918b6d5.pdfIn PDF document text
    • http://files.scaperottilaw.com/uploads/1/3/2/7/132712093/8655014.pdfIn PDF document text
    • http://files.aquinasmaths.com/uploads/1/3/1/6/131637658/2235093.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/1/0433/4852/5208/files/jigar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/on_crime_and_punishment_cesare_beccaria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2119/7724/files/55237326835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8829/5576/files/92800636794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6710/5687/files/kazisefupowelovexinaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7432/1560/files/the_armor_of_god_bible_study.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1612/5590/files/55360336761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7344/5792/files/tuxefof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/97946921265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3735/0309/files/8501470065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7932/7126/files/almanach_des_sorcires.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8396/4324/files/67201159931.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
🗂 Part of campaign: aquinasmaths.com 3 samples

Related samples 4

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_off000068de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68DE 5508 bytes
SHA-256: 14329950684ac7030e23bc03e33cf670ea5661b8b5ab10a1cbdb768a184ef852
font_01_sfnt_off00007b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7E 10068 bytes
SHA-256: dc0b995bded38b7bb0fed8878961fc3a00234f5ab9b32f41f1e2c8b20f54d15b

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