Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a4212e4d7fb2c0f…

MALICIOUS

PDF

44.6 KB Created: 2020-08-22 05:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c24b69bf9355f7a2b9d028d3c51552d SHA-1: 2046709118a201620fea6a85917c5815494ff8cb SHA-256: 0a4212e4d7fb2c0f675a9e8fbf29df8ff7397daf0e1cead0c4aa66c9674b0de9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links, including one to a known malicious redirector, designed to lure users into downloading further content. The document body and embedded links suggest a phishing attempt disguised as a technical document. The presence of numerous SEO-optimized links points to a link farm strategy to distribute 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=rack+and+pinion+steering+system+calculations+pdf In PDF document text
    • http://files.shipasapfreight.com/uploads/1/3/1/1/131164063/sufozavew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/14816910663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/diabetic_ketoacidosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/lifojaremaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8300/5078/files/53333451024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3732/6488/files/kakezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7206/9525/files/83746088686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2140/0226/files/38384834993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9476/9821/files/59748319354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/child_and_adolescent_mental_health.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9813/9813/files/cahier_de_vacances_espagnol.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6189 5528 bytes
SHA-256: 2fa0bffe31e25819cccbde4e80d0a9855add02a3fe198877b2b6203be8ad9315
font_01_sfnt_off00007443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7443 10272 bytes
SHA-256: c18f5d2885f405b0750da85f55285ca25f97ae8182ba171302e3d444b705cc85
font_02_sfnt_off00009764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9764 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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