Malicious PDF — malware analysis report

Static analysis result for SHA-256 44fa3201b97c197c…

MALICIOUS

PDF

44.0 KB Created: 2020-08-07 14:38:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dd6e602a87e872c666e889f61cc261c SHA-1: 9eb16d0e455a00dcc4a97262141cc3efbcfbc438 SHA-256: 44fa3201b97c197c41219f9c6d16547d927203b28a0eabd83f1ddef3e7b7d407
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of the primary links directs to a known malicious redirector service, ttraff.com, which is likely used to obscure the ultimate malicious destination. The document body itself is heavily obfuscated and contains what appears to be a reconstructed URL, further indicating a malicious intent to redirect the user to a harmful site.

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=cost+behavior+analysis+and+use+pdf
    • http://files.njnerve.com/uploads/1/3/1/4/131438216/3879525.pdf
    • http://files.dyslexiaadvocacyactiongroup.org/uploads/1/3/1/6/131606227/galijurefiwipaxip.pdf
    • http://files.ladiesofspeed.org/uploads/1/3/1/3/131380052/motejupif-wefos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tikumakosesik.pdf
    • https://cdn.shopify.com/s/files/1/0431/6974/2999/files/mogigiwage.pdf
    • https://cdn.shopify.com/s/files/1/0434/1081/7180/files/precalculus_fifth_edition.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/corsair_void_pro_mic_not_working.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3718/files/pajezobakajawip.pdf
    • https://cdn.shopify.com/s/files/1/0431/7750/9020/files/siderufusukise.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/rofezitoxig.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5108/files/74422633226.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/83940400750.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/tadivokedarojemaxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5539/0630/files/86725219962.pdf
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/rogawski_multivariable_calculus_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4831/files/uc_essay_examples.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_off00006b2f.bin
e845a8e47230e3eb373c4e985bdfa9cbc8b502155b81402954eada2a4bbb7953		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B2F 5336 bytes
font_01_sfnt_off00007d52.bin
bd99e3627b0cb1b52d3a0d34677ef01b938ea7ec4d55dcd3e5bd38ba4b7ec905		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D52 10632 bytes

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