Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b71c5ec35f32c34…

MALICIOUS

PDF

417.9 KB Created: 2020-09-07 04:00:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e971949ac69ee0663cb93d443169dd3c SHA-1: bc492502ea21e50b58ea92651467d405b5f539d7 SHA-256: 8b71c5ec35f32c34b81ba0e5799c4b646c939f0033af57b37ee608c93a03bf00
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL in the document body, 'https://ttraff.ru/pify?keyword=winrar+for+mac+10.+7.+5', is the primary indicator of malicious intent. This link is presented to the user as a download for WinRAR, likely as a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=winrar+for+mac+10.+7.+5
    • https://cdn.shopify.com/s/files/1/0456/8625/9871/files/zosateloj.pdf
    • https://cdn.shopify.com/s/files/1/0437/5507/7781/files/xivuvimuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45560821546.pdf
    • https://cdn.shopify.com/s/files/1/0433/4449/4760/files/62104196923.pdf
    • https://cdn.shopify.com/s/files/1/0430/4922/2298/files/alquimista_libro_completo_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0430/0544/4259/files/fetuvajaguwisip.pdf
    • https://cdn.shopify.com/s/files/1/0459/7140/7015/files/5738198908.pdf
    • https://static.usrfiles.com/ugd/2c8d66_cc964b5db0e247368b741c7055380184.pdf
    • https://static.usrfiles.com/ugd/7a359d_d7bd82958b864be6ae41f77a49622656.pdf
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/mcdonalds_coupons_2020_nova_scotia.pdf
    • https://cdn.shopify.com/s/files/1/0432/0113/4747/files/nefagevulaximosipuda.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/47332325733.pdf
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/29503038262.pdf
    • https://cdn.shopify.com/s/files/1/0437/2368/6056/files/xilavefoxizo.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_off000638eb.bin
7ee13cf32bae5b0b4c8374b6ff38fccabc5317dad1fa3e57c1363702dbb2faee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x638EB 5260 bytes
font_01_sfnt_off00064add.bin
67f1a79b2d7b4ff57861e1d6726c704494d4c612fcaeb85513a74b7907ef6276		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64ADD 14676 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.