Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0bc12562b1a947e…

MALICIOUS

PDF

44.5 KB Created: 2020-08-18 14:30:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8efa476358ccffe751aa777a44bfad07 SHA-1: 06acb236151ee6f7e4f7fccd35cad3a93c846a32 SHA-256: e0bc12562b1a947e0706a96bfecb04db90b52aca1bda3aa11382b44b45e4f3fb
202 Risk Score

Malware Insights

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

The PDF contains a lure related to a 'release of retention payment letter template' and includes a critical heuristic firing for a malicious redirector link. This link, 'https://ttraff.ru/pify?keyword=release+of+retention+payment+letter+template', points to known malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, many of which are hosted on cdn.shopify.com, suggesting an attempt to obscure the final malicious destination. The presence of a visual download button further supports a social engineering attack vector.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=release+of+retention+payment+letter+template In PDF document text
    • http://files.weeblackbook.info/uploads/1/3/1/3/131381900/ruzojiba_makera.pdfIn PDF document text
    • http://nevogise.debbiepenz.com/uploads/1/3/2/6/132681836/6961188.pdfIn PDF document text
    • http://meluv.humphreyadventures.com/uploads/1/3/0/7/130776330/6021499.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/1/0428/2423/7212/files/wixufebumedizanematu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/8229/5969/files/alzheimer_s_disease_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1373/2512/files/pajuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7058/7029/files/97362568626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2540/6874/files/canonical_form_of_boolean_algebra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/wovatowuponabitaxuval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1117/7639/files/vokiresamupetobil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3785/9735/files/25696010373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/appendix_a_form_for_gate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2704/6298/files/adobe_reader_pc_software_download.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 6

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_off00007035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7035 5156 bytes
SHA-256: 9b454b33e241fca70cccabb88c714b27c6ce584940e4ebf8785eb1bff6703a91
font_01_sfnt_off000081b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B2 10472 bytes
SHA-256: 396ad69d25ad1a028034036c1fe8ecec6f7cc1a6dc72582cc9107694addf07a6

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