Malicious PDF — malware analysis report

Static analysis result for SHA-256 03bf94201ea1213b…

MALICIOUS

PDF

79.7 KB Created: 2020-08-01 04:46:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b757c2117f823eebab157904dc735110 SHA-1: 22147b440392cff4db21bebceaf4b81cc83fcd25 SHA-256: 03bf94201ea1213b3610254609cb49271498b5e9eca15e19de11b46e9476abc9
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Looney tunes basket ball'. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic. The ML classifier strongly indicates maliciousness.

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=looney+tunes+basket+ball
    • http://files.designyoursignregina.com/uploads/1/3/0/9/130969505/2d05cedbf30b4bf.pdf
    • http://files.neverwares.ca/uploads/1/3/1/4/131453395/2175669.pdf
    • http://files.autismeducatorsact.org/uploads/1/3/2/6/132681783/b629bf27200553e.pdf
    • http://files.skilledpaint.com/uploads/1/3/0/9/130969254/dazetefeku-mowodosikifujel.pdf
    • http://files.youthadvocatesforanimalrights.org/uploads/1/3/1/4/131437149/madotuxuvigifasozad.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/20596017491.pdf
    • https://cdn.shopify.com/s/files/1/0435/0204/3288/files/14774366947.pdf
    • https://cdn.shopify.com/s/files/1/0435/5260/4328/files/3091953003.pdf
    • https://cdn.shopify.com/s/files/1/0435/0849/8591/files/namofenolusikogumozale.pdf
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/51832034871.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/nawulotar.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/98208855761.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/jaxosaraferuloserive.pdf
    • https://cdn.shopify.com/s/files/1/0440/2891/9973/files/12725380779.pdf
    • https://cdn.shopify.com/s/files/1/0431/4729/6922/files/bugokebavebexa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33540287451.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3627/files/fotetotij.pdf
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/jijate.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_off0000fcb1.bin
556b9043c56c399bc7e55914cef273cb0d05d5cdf1e6e92fd68c8b857034fb05		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB1 4832 bytes
font_01_sfnt_off00010d43.bin
a433054562d4ce0b09ef626657bef9d966c43e937b3acc3dd991418837588de1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D43 10620 bytes

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