Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9187d42e38e7c74…

MALICIOUS

PDF

38.8 KB Created: 2020-08-22 23:08:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f9e5384d8ccaf4594ffdaac14b8051f9 SHA-1: 1a372795b14f5fd471247ef84015e6d37bfccfb8 SHA-256: c9187d42e38e7c7479417288aaaae805abc5affed5ddbc39ad2ce77ebe85d736
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, with the primary link pointing to a known malicious redirector. This suggests the document is designed to lure users to a malicious site, likely for credential harvesting or malware delivery. The ML classifier strongly supports the malicious verdict.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.cc/pify?keyword=shooting+games++in+jio+phone In PDF document text
    • http://files.inphyre.com/uploads/1/3/1/0/131070035/9216af3b4252.pdfIn PDF document text
    • http://ginufaz.hibsj.org/uploads/1/3/1/3/131398008/bafodokomubixis.pdfIn PDF document text
    • http://files.azaset.org/uploads/1/3/1/4/131438477/xusogirupilam-rurofixir-fitidusonites.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/1/0439/2943/6315/files/mathematical_interest_theory_2nd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1272/6677/files/dynamics_of_machinery_question_bank_with_answer_regulation_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1572/3414/files/xogabulagatarewufajedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/gulisixorafawepojulobapog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/pipeduvezuzanagukikop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/xodijedawaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/misijixorivosop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/xaxasuxogan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/depanufopaxidimelogojojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/10_miles_in_km.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9763/7539/files/vadarazotobidez.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_off000059dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59DC 5284 bytes
SHA-256: cfabc7008c98ee91000e4e39ddef1e673987619993506400d9f71c044fc6312b
font_01_sfnt_off00006bab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAB 10184 bytes
SHA-256: 72d65f626657cf8fbc83dfbc0e57c459b136deff5789e67efefcc0012253c027

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