Malicious PDF — malware analysis report

Static analysis result for SHA-256 520a51adbe9db53d…

MALICIOUS

PDF

59.1 KB Created: 2020-08-13 21:46:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6dd4049b7dce287173d4dfabac941ccf SHA-1: 1154fdd8f491953ac412e599d167111a3dbcd774 SHA-256: 520a51adbe9db53d867267509332d1eee659de10a69c0451079329cace8c8527
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO link farms and redirector abuse. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. The presence of many links to Shopify domains suggests an attempt to blend malicious links with seemingly legitimate ones.

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=alzheimer%2527+s+society+factsheet+power+of+attorney
    • http://files.lkoc.org/uploads/1/3/1/3/131383497/bofepowoj.pdf
    • http://files.indianlandsocceracademy.com/uploads/1/3/1/4/131406234/e4e6799b7c23ed.pdf
    • http://files.mfengshui.com/uploads/1/3/2/3/132303118/11eb4f49d.pdf
    • http://files.thanksforeverything.shop/uploads/1/3/1/3/131384070/2259709.pdf
    • http://files.sophieknab.com/uploads/1/3/0/8/130874403/39e11c115c.pdf
    • https://cdn.shopify.com/s/files/1/0431/0774/5958/files/arabic_bilingual_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0440/7482/7941/files/joxape.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9868/files/berker_serie_1930.pdf
    • https://cdn.shopify.com/s/files/1/0437/6517/0334/files/all_bodybuilding_workouts_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45035229099.pdf
    • https://cdn.shopify.com/s/files/1/0452/4458/0002/files/long_and_short_vowel_sounds_worksheets_for_grade_1.pdf
    • https://cdn.shopify.com/s/files/1/0432/5376/0160/files/vuwiwusazi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5398/1594/files/nuzukutapat.pdf
    • https://cdn.shopify.com/s/files/1/0433/4636/2523/files/77089268254.pdf
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/zawobib.pdf
    • https://cdn.shopify.com/s/files/1/0431/8494/7357/files/44920355760.pdf
    • https://cdn.shopify.com/s/files/1/0429/2545/7574/files/88280504540.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a81.bin
9a8fef50694d1b795224a988cd5ee4360cc4f20c7ae8773e230f34c64c55da6d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A81 5308 bytes
font_01_sfnt_off0000ac82.bin
c085c7ea3df18bf8379c1fd7058f1e06d86c0367138ba9a3dfa155a6b0e4c307
pdf-font-stream PDF embedded font (sfnt) at offset 0xAC82 10760 bytes
font_02_sfnt_off0000d0d6.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D6 4324 bytes