Malicious PDF — malware analysis report

Static analysis result for SHA-256 246028e75ac9dfc5…

MALICIOUS

PDF

35.6 KB Created: 2020-08-12 18:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0819800e6cece655c8d91a21a6a8c2b SHA-1: 420044988df2ca27b39e8ec2d93846cd1acd29e0 SHA-256: 246028e75ac9dfc5983c6d64a666a9cc696e8d801b26b2343a4222a565d42f56
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing indicating it links to known malicious redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=mckinsey+quarterly+report+pdf`. It also exhibits characteristics of a PDF link farm, with numerous external links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains references to the malicious URL and benign-looking document titles, suggesting a lure to disguise the malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=mckinsey+quarterly+report+pdf
    • http://files.sparkleandshineshowclothes.ca/uploads/1/3/0/7/130776049/6728621.pdf
    • http://files.pleasanthillpediatrics.com/uploads/1/3/2/6/132680986/veletudaminik.pdf
    • http://files.gcclittleton.org/uploads/1/3/1/8/131856109/dubedoj-lekipugadomu-lexevurenedal.pdf
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/unlimited_power_tony_robbins.pdf
    • https://cdn.shopify.com/s/files/1/0434/5895/3369/files/xanexefijepexipafatufa.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/79050621569.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/vugudadugerenamakukorof.pdf
    • https://cdn.shopify.com/s/files/1/0433/5714/3205/files/14683602367.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/linux_bash_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/8315/9957/files/tool_sober_tales_from_the_darkside_songs.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/lepaboson.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/gigazep.pdf
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/cbt_worksheet_for_anxiety.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0133/files/kodemizogiju.pdf
    • https://cdn.shopify.com/s/files/1/0432/2020/5726/files/fenej.pdf
    • https://cdn.shopify.com/s/files/1/0436/7423/9129/files/bukhari_hadees_urdu.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_off00004d15.bin
caf45302e1891e1f03f899fc8460dc7b1a4902182522fbaf83be7ceb74894403
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D15 5444 bytes
font_01_sfnt_off00005fb1.bin
a5dbe39a5a6389c44fef06e964ef57827828fe7bdb3e22d7cb9d9bac53b81564
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB1 9992 bytes