Malicious PDF — malware analysis report

Static analysis result for SHA-256 90e62e185d49ebe4…

MALICIOUS

PDF

37.0 KB Created: 2020-08-15 00:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 289bf91b51a69c57d5d036e6734902d2 SHA-1: dab3443a10a7b4942df0e891273cf4977380190c SHA-256: 90e62e185d49ebe4a3cc76672d23f87d7c5ee1b1c86e0201821c4dc6983a6339
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be an 'achievement report' and includes the malicious URL 'https://ttraff.com/pify?keyword=achievement.+csv+coc'. This suggests the PDF is designed to trick users into clicking the link, likely leading to a phishing or scam page.

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.com/pify?keyword=achievement.+csv+coc
    • http://files.oheadhra-mackenzie.com/uploads/1/3/0/7/130776254/981dd610e57.pdf
    • http://files.richardson-community-psychology.com/uploads/1/3/0/7/130776255/1499603.pdf
    • http://files.kootenayratraid.com/uploads/1/3/1/3/131380213/8724085.pdf
    • http://gezunonef.dibbycables.com/uploads/1/3/0/7/130775971/nanix.pdf
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/66620222836.pdf
    • https://cdn.shopify.com/s/files/1/0430/9221/3911/files/gononaturadi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5833/0786/files/fuzotazenuvixivali.pdf
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/jumoxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/vupifoxupakuxot.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/expediting_report_definition.pdf
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/28715111443.pdf
    • https://cdn.shopify.com/s/files/1/0428/8443/2038/files/appareil_de_golgi.pdf
    • https://cdn.shopify.com/s/files/1/0439/1341/2760/files/wiwiv.pdf
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/algebraic_equation_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/3210/1543/files/78977413675.pdf
    • https://cdn.shopify.com/s/files/1/0433/7382/2102/files/15333778542.pdf
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/murobupijabubawonarugotex.pdf
    • https://cdn.shopify.com/s/files/1/0432/7689/4372/files/xijizifobe.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_off000053bd.bin
ae5a81e802c98f143d830b6de3d57d99adcb016043f3f69a8165aa80e695220d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53BD 4784 bytes
font_01_sfnt_off000063ed.bin
3756eb6cf25e5cda354b576790e71f93991232d7571df8b620b5072ff7672a5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63ED 10296 bytes

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