Malicious PDF — malware analysis report

Static analysis result for SHA-256 4779a396250ce60e…

MALICIOUS

PDF

45.5 KB Created: 2020-08-19 12:33:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9841af93124b0400eb187e053b2bbb1a SHA-1: 4f17fe221c30ef56fbb9235284f0e2237d135f4f SHA-256: 4779a396250ce60e05bd330e55a850aaaebe5f356e47c9b3d5b81ca33c4d0664
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a lure promising game cheats, which is a common social engineering tactic. It embeds multiple links, with one identified as a malicious redirector pointing to 'https://ttraff.cc/pify?keyword=cheat+gta+vice+city+apk'. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated, but the presence of the malicious redirector and the link farm heuristic are sufficient to assess the attack pattern.

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.cc/pify?keyword=cheat+gta+vice+city+apk In PDF document text
    • http://files.open-insurrection.com/uploads/1/3/1/6/131607374/banagumitowoted.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/1/0430/4237/3785/files/nodunarapilogumoliwiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0378/8959/files/sofirisetoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/pozala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6726/8517/files/47324264014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8531/4715/files/icp_discography_kickass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/rozik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/44947650670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3495/9256/files/40727402292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4266/7676/files/bajovalubim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0850/3456/files/catalogo_de_cuentas_de_un_hotel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3800/6686/files/28115621423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8996/0861/files/galileo_telescope_instruction_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6062/5557/files/64946534739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/mumevuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1773/2249/files/44333458555.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66ED 4712 bytes
SHA-256: bf04366fbe7f3b7c112069da4954dc5ca9d2c66ee6ccdbdc90708f5431e4c48e
font_01_sfnt_off00007719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7719 10560 bytes
SHA-256: be7e4926265d85c226680a77acaa78845c0c4fc164f866aa019882175d6b9af3
font_02_sfnt_off00009af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF2 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3