Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4effd812c9048ca…

MALICIOUS

PDF

47.8 KB Created: 2020-08-18 22:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7befbd1de489fd1018f44c70200c2972 SHA-1: 27f44b20e3be34cb50120e7aef01fd581257e13d SHA-256: d4effd812c9048ca535a03124c05144126b41324e278dd849e3657eb2b09d5c1
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, includes this URL and numerous other PDF links, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is https://ttraff.com/pify?keyword=brandenburger+nalebuff+coopetition+pdf, which is likely used to redirect the user to a malicious site. No scripts were extracted from this sample.

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.
  • 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.
  • 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=brandenburger+nalebuff+coopetition+pdf
    • http://rovutopen.poorwarren.com/uploads/1/3/1/4/131437689/4fc343.pdf
    • http://files.asadeltanu.org/uploads/1/3/0/8/130815213/xorufozuk-fogamozezedo-gapaxu-xufupoxufof.pdf
    • http://nulapodis.ponyexpressprints.com/uploads/1/3/1/3/131379485/wadekamupoziz-venediwi-gawatunir.pdf
    • http://files.annapicklesharvey.com/uploads/1/3/1/4/131438427/6022432.pdf
    • http://files.flalaw.pro/uploads/1/3/0/9/130969631/pewixavegunaletimu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5318/files/98174872927.pdf
    • https://cdn.shopify.com/s/files/1/0437/5710/9402/files/bisection_method_in_numerical_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0429/5848/7715/files/academic_reading_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/rogawski_calculus_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/1653/5720/files/tometalelitemowofenune.pdf
    • https://cdn.shopify.com/s/files/1/0429/2942/2499/files/6849535363.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/dumopubonate.pdf
    • https://cdn.shopify.com/s/files/1/0430/2857/8467/files/lavigekalarutufuji.pdf
    • https://cdn.shopify.com/s/files/1/0428/4553/6419/files/vfw_certificate_of_appreciation.pdf
    • https://cdn.shopify.com/s/files/1/0427/7754/2823/files/22577955975.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_off00007d0a.bin
63204d289fdb5a61faab0b9d9e30574a6de87187b434288e8aefa3f5dee89790		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0A 5332 bytes
font_01_sfnt_off00008f31.bin
692c0b55f71704f2f2b5511a0dc5852879c1fe571259c487cbf59aced8ce284a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F31 10304 bytes

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