Malicious PDF — malware analysis report

Static analysis result for SHA-256 05f3b96d2352dca9…

MALICIOUS

PDF

41.7 KB Created: 2020-08-19 04:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea1bc5643d8679fb5d61a508c20e8026 SHA-1: e9d830aa6ed484dd1c8ad894f0e74c52630e694c SHA-256: 05f3b96d2352dca9cd35657fd14b89109953e850e49eaf0d09a2bf1aa0aa6d10
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one identified as a malicious redirector. The document body text, though heavily obfuscated, contains references to 'Spider man 3 game free pc', suggesting a lure to trick users into clicking the malicious link. The presence of a malicious redirector and a large number of external links indicates an attempt to drive traffic to potentially harmful content.

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=spider+man+3+game++free+pc
    • http://pijofax.bios-architecture.com/uploads/1/3/1/4/131408738/d8d1d92a4ef.pdf
    • http://files.meowstories.us/uploads/1/3/1/4/131438611/6722241.pdf
    • http://files.diversityunitkncirg644.com/uploads/1/3/1/4/131452735/gajonotawipalamovixo.pdf
    • http://newotexib.thesugarshackofboilingsprings.com/uploads/1/3/1/4/131453540/titiwerifo_geliwukuxi_savilu_fedasuwuduralim.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/8611/7019/files/48825323232.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/ronomujoluvijiniwewil.pdf
    • https://cdn.shopify.com/s/files/1/0446/2444/5603/files/easy_guitar_rock_songs.pdf
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/33558665017.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/cadena_alimentaria_nutricional.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92283418618.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/bakuzibeledajofofevupaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/4478/8634/files/52058612652.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/66995507099.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065b9.bin
7f4c7d00341707de9b319edb26fd9d690d6176de7bd8ef4fe5b2fb4a73237632
pdf-font-stream PDF embedded font (sfnt) at offset 0x65B9 5532 bytes
font_01_sfnt_off00007871.bin
45c4549f57ffaeeee7fbcd39beae457baf3ea4aa13e3b521b9e913f0ba47544b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7871 9944 bytes