Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0f784589952cebb…

MALICIOUS

PDF

41.3 KB Created: 2020-08-03 06:02:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5025a68516f7f040cbb480162767fd15 SHA-1: a23f68a5c4383d551780ffe915c3d8fd06d96feb SHA-256: b0f784589952cebbfb80d8c8f50c388bf678ec50a80c25995c7f47402023d6b0
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) known for malicious activity. The document body, though partially corrupted, suggests a lure related to 'free magazine pdf download sites'. The primary heuristic indicates the PDF is a malicious redirector, and the presence of numerous links supports this, aiming to lead users to potentially harmful 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=free+magazine+pdf+download+sites In PDF document text
    • http://files.connecticutgolfacademy.com/uploads/1/3/1/6/131637178/wonujipik.pdfIn PDF document text
    • http://lateborig.centerforhealthydevelopment.org/uploads/1/3/1/0/131071243/32377cb9f3da019.pdfIn PDF document text
    • http://renukigeg.balticsportsciencesociety.com/uploads/1/3/0/8/130874064/b03d364.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/1/0433/7614/8641/files/mtg_arena_could_not_access_network_location.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0921/0529/files/super_mario_bro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4206/9918/files/gibadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4055/5687/files/33298255129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2461/2508/files/soxobuwes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1554/4737/files/setunuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2499/6773/files/surevibujaxolofabuwik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7140/6241/files/koriwik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/machine_design_an_integrated_approach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9120/files/shrug_copy_paste.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/72618325887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0398/5570/files/63258111391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.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 3

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_off0000632f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632F 5456 bytes
SHA-256: 314afb82506fc733033caea9ab10cb578bec0e2da65899b72b9b7ac008dfb501
font_01_sfnt_off000075ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75CA 10084 bytes
SHA-256: c33fda1161ce555518cfdb9b28c798c88ce2703320dc5766d183673257675335

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