Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f8ff54f79fd5759…

MALICIOUS

PDF

39.8 KB Created: 2020-08-20 21:39:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3cf0d4b6aef03106ed86fee76b0424e7 SHA-1: 564ad259f650444687301257d80ef495a7c7446a SHA-256: 1f8ff54f79fd57596cdb1ea6af0d87be2967626c33430e8d2892ab2bb491dafb
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a URL associated with malicious redirector infrastructure, specifically advertising a game hack. The document body and heuristics indicate a phishing attempt disguised as a free download, likely to lead users to a malicious site or download further malware. The ML classifier strongly indicates maliciousness.

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.com/pify?keyword=injustice+gods+among+us+hack+android+free In PDF document text
    • http://files.bettmusicdepartment.com/uploads/1/3/1/4/131407045/6b2e199f7.pdfIn PDF document text
    • http://files.ramirezromerolab.com/uploads/1/3/0/7/130775018/depegavabewivu-judulozored.pdfIn PDF document text
    • http://mejeru.bradyscustomwoodcraft.com/uploads/1/3/0/7/130775195/vutigem_tojufan.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/1/0428/0709/9558/files/xijumivuperitubaram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4513/3207/files/35508339457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1557/5464/files/bruce_lee_workout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3279/6574/files/cartier_bresson_decisive_moment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8683/1004/files/gefinenazawepewisib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8026/8438/files/bf-_888s_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6647/5164/files/dexotirejon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9221/3911/files/sensory_integration_and_the_child_ayres.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/cambodia_visa_on_arrival_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3865/2069/files/dibilureraxodiji.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D41 5480 bytes
SHA-256: 301c4bfc59abdb8251937920f9cfaae375b183afe2069f262684ffec65031bb7
font_01_sfnt_off00006fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBB 10148 bytes
SHA-256: 9537585d24a663c1a850230504856d8a4102f33f4f18c2da8bd717aadc684328

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