Malicious PDF — malware analysis report

Static analysis result for SHA-256 f61b2db28b107214…

MALICIOUS

PDF

45.3 KB Created: 2020-08-02 04:56:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b63fa7e0227ba48b9ba23b68b2ea38c7 SHA-1: c58f40a94999c26a3358746a3e5dd30606495208 SHA-256: f61b2db28b107214bbcf3c7708645ded2bcfadbaeadad5855e160c6b773de978
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating a redirector link to a known malicious domain. Additionally, it features a large number of external PDF links, a common tactic for SEO poisoning or distributing malicious content. The embedded URL in the document body, 'https://ttraff.ru/pify?keyword=now+is+the+time+for+running+pdf', is the primary indicator of malicious intent, likely serving as a gateway to further malicious content.

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.ru/pify?keyword=now+is+the+time+for+running+pdf In PDF document text
    • http://files.mypdxlifecoach.com/uploads/1/3/2/6/132683422/06de9cd.pdfIn PDF document text
    • http://files.independencecheer.com/uploads/1/3/1/8/131860060/590953.pdfIn PDF document text
    • http://files.nourishnotdiet.com/uploads/1/3/1/4/131438217/refobofopasud_ludobivunudoduk_pinekew.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/1/0431/7547/7416/files/39419733885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4062/8133/files/making_hard_decisions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5046/6454/files/xusimibifudufumut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/vimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/kunipoxolosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4925/4041/files/pexodowivalofovekozonar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gaxasukazojolivuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6421/4175/files/kudujamerumevob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2384/2983/files/gaxunigumuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8423/4396/files/toxap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8839/6959/files/kiloniwurorisukefipulada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1028728638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2661/2378/files/folavorarujolakajuditu.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_off000073e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E5 5272 bytes
SHA-256: 10d20e901691426e42a4055b8503d0e042acb6bb7633833e47da381159b258e5
font_01_sfnt_off000085c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C5 9976 bytes
SHA-256: 4f52a5e8c9323325d4e7bee2b7fe6c65d6b24eb9cc0f6f6ba418e941f29c1252

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