Malicious PDF — malware analysis report

Static analysis result for SHA-256 25d9659bb34081d2…

MALICIOUS

PDF

44.3 KB Created: 2020-08-12 20:01:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea67235470b796c99da33ebcecfc2371 SHA-1: da117449d8759e7a8f808495e2fe7228aac2e671 SHA-256: 25d9659bb34081d2363b4997cb0b0db7dec651ffd660fd2bbe3289a6d018f074
154 Risk Score

Malware Insights

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

This PDF file is designed as a lure, using the promise of 'Gta vice city cheats pdf file free download' to trick users into clicking a link. The primary link, 'https://ttraff.cc/pify?keyword=gta+vice+city+cheats+pdf+file+free+download', is identified as a malicious redirector. The document also contains a large number of links to other PDFs hosted on cdn.shopify.com, suggesting a link farm for SEO manipulation. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=gta+vice+city+cheats+pdf+file+free+download
    • http://files.roboticsforall.net/uploads/1/3/1/3/131397973/94f29df04e11e.pdf
    • http://files.hyojinlee.com/uploads/1/3/2/7/132712614/553efc51b3f.pdf
    • http://nisalex.carlisleherbalstuff.com/uploads/1/3/1/4/131453850/famukuxokeferin.pdf
    • http://files.inwonderlandfilms.com/uploads/1/3/1/4/131455903/d096e6f7215.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nitupalakisotubawu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/77851023816.pdf
    • https://cdn.shopify.com/s/files/1/0428/3564/0476/files/ocr_to_word_converter_free_download_online.pdf
    • https://cdn.shopify.com/s/files/1/0433/6454/8762/files/dogikananeramajopojurikek.pdf
    • https://cdn.shopify.com/s/files/1/0431/7272/4900/files/bookkeeper_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/5109/6984/files/lekaxiwikazededowiken.pdf
    • https://cdn.shopify.com/s/files/1/0434/4732/0728/files/mm_dd_yy.pdf
    • https://cdn.shopify.com/s/files/1/0435/8638/8136/files/35629077613.pdf
    • https://cdn.shopify.com/s/files/1/0438/2192/4514/files/45177320753.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9141/files/54736613114.pdf
    • https://cdn.shopify.com/s/files/1/0438/4676/2656/files/calculus_full_notes.pdf
    • https://cdn.shopify.com/s/files/1/0435/8507/7405/files/73871829590.pdf
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/38658772381.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e81.bin
bc54f5ff73d03cf62cfd2a50621c4ea2ee40fb61ead85cf3abfb4be65fdf433f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E81 5528 bytes
font_01_sfnt_off00008166.bin
09f620800b32e2e91a64a09fb4cc24d1562426b974d2cccee16c6b104f6bdffd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8166 10144 bytes

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