Malicious PDF — malware analysis report

Static analysis result for SHA-256 869372c25a12874c…

MALICIOUS

PDF

45.8 KB Created: 2020-08-16 12:59:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 60f5c47adaebcf211e90809f0209f088 SHA-1: 4ad854f60418dd40e5b991da440db52b19a97af9 SHA-256: 869372c25a12874cc1297fd3d1d20a7cb183078186ad5aac7c439513da849adc
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains numerous links, many of which point to a redirector infrastructure known for malicious activity. The document body, though obfuscated, contains a URL that is also present in the heuristics, indicating a likely attempt to redirect users to malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to exploit users through link manipulation.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wb?keyword=nucleic%20acids%20and%20protein%20synthesis%20worksheet In PDF document text
    • http://files.hisinscriptions.com/uploads/1/3/1/4/131483371/kizamovi-sodoxi-rijopasibexuzi.pdfIn PDF document text
    • http://files.mouseandmeco.com.au/uploads/1/3/1/8/131872273/e6e3068229.pdfIn PDF document text
    • http://mebovoz.mcmasterclimbingclub.com/uploads/1/3/0/8/130874359/tapur.pdfIn PDF document text
    • http://files.twin-city.org/uploads/1/3/1/3/131378942/tidifu-zuwono-modagozixiwu-wifotob.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/1/0430/1137/5267/files/bawawovakerodisefin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7708/2019/files/balun_canan_completo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4169/2580/files/fairy_tail_zero_episode_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/metallica_back_to_the_front_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/bomorepedidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/zesubosanarabixixijelebav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7589/5450/files/58674249081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0543/6326/files/jemajijofevepofunanegajij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9070/5573/files/45465231437.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 8

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_off000074ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74BA 5388 bytes
SHA-256: f5e754768b19fdff21ae1a3ee87bb61523b9caa88facc6dbdac252c6ef4be55c
font_01_sfnt_off00008718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8718 10264 bytes
SHA-256: 181c6a185770f985eabdf1474bcbbbc59b7d11d236d829ac48935be871de983c

Open this report in the interactive analyzer, or submit your own file for analysis.