Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b71e5ab46e90fd7…

MALICIOUS

PDF

36.0 KB Created: 2020-08-16 13:09:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d5863aec64282e0fbbfaf0262c0f47f SHA-1: ba83456128d055d5ca09952ee3188f7fd1d560cd SHA-256: 0b71e5ab46e90fd7cc58119c912f0768ea08312cf39ddc6775b552febfe24b7b
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains multiple links to a redirector service, specifically 'ttraff.com'. The document body and embedded links suggest a tactic of disguising malicious URLs within seemingly academic or informational content to trick users into clicking them. The primary malicious IOC is the redirector URL, which likely leads to a phishing page or malware download.

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=protein+disulfide+bond+formation+in+prokaryotes In PDF document text
    • http://files.leavingtheninetynine.org/uploads/1/3/0/9/130969695/rimos.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/1/0435/5761/7823/files/mujuxizamuvepatusepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8779/7151/files/nonuwewesepexekino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3111/7467/files/sugovusuwefudajijap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/gastroenterology_clinical_cases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7679/4008/files/amino_acid_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2640/7833/files/98234208113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6534/3126/files/rudirifibuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2202/4867/files/wadazakoxara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1652/7770/files/gavabotaboro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1442/9608/files/fulazugunepowurakijav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/76048105259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2490/6400/files/xolofibunixigozolinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/90342061022.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_off00004d32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D32 5492 bytes
SHA-256: fcae46572028eead89958778c71d7119081342a4e57c99bed15731fa36b9f4af
font_01_sfnt_off00005fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC8 10248 bytes
SHA-256: c238f84ba8f838a6559c417c7970b66234beb7b6b0cff1345f1fda9c00c46596

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