Malicious PDF — malware analysis report

Static analysis result for SHA-256 b908e0310768e513…

MALICIOUS

PDF

33.3 KB Created: 2020-08-02 23:09:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf1735670ffd58f61b62201a1bd9be5e SHA-1: a20bc825dc592f2c3133be02b19239826e13dda1 SHA-256: b908e0310768e513b7714c8fdfb5c27653945d4704766f02bd277de5c6bea29a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=corpsman+manual+pdf'. The presence of numerous links, including those hosted on Shopify, suggests a link farm or redirection tactic to obscure the ultimate malicious destination. No scripts were extracted from this sample.

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=corpsman+manual+pdf In PDF document text
    • http://files.trottereventcenter-ord.com/uploads/1/3/1/8/131856769/wenitelapoxe-lojolajujun-lojomuriw.pdfIn PDF document text
    • http://files.dear2myheart.com/uploads/1/3/0/8/130873794/2584114.pdfIn PDF document text
    • http://files.salemumpires.com/uploads/1/3/1/4/131438423/4897237.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/1/0429/3197/8403/files/wikafomopojakudedalur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2433/4498/files/89631977479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/gejufuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/5559423822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/wupafidenilutuxisaruge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/thomas_calculus_13th_edition_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8720/7327/files/wivarululuxesikato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/38682582855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7529/6670/files/basozevevaripibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7063/5678/files/5344653396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8497/1173/files/bomovepirepoxubimikara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87463685859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9303/3117/files/mupajewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/punuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4436/3678/files/vokan.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46A9 5092 bytes
SHA-256: 77b51dc7281396c203d871bc826dc54fc5dee7ebd9dea77414eddd66fd549d34
font_01_sfnt_off000057d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57D4 9560 bytes
SHA-256: bfec85484b3185d6a6258e5c8e81e794b3053e322921514895ba1af544acc606