Malicious PDF — malware analysis report

Static analysis result for SHA-256 b83da6f65dca2468…

MALICIOUS

PDF

42.5 KB Created: 2020-08-21 22:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 319a2ff7a9c85c966007dc45a203db82 SHA-1: d9a3ae658579c7fd39dd51bedec1d3830f4f9249 SHA-256: b83da6f65dca24683666f9530bc6089fbda84fe4d77c1e36183ffc63535500c9
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=lomotil+davis+drug+guide+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on domains like cdn.shopify.com. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to lure the user into clicking them. The presence of multiple embedded URLs and the malicious redirector strongly indicate a phishing or malware distribution attempt.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=lomotil+davis+drug+guide+pdf
    • http://kabegafod.northvicgps.com/uploads/1/3/0/7/130740117/nuwuz.pdf
    • http://files.nzwfd.co.nz/uploads/1/3/0/9/130969652/c9ece39ba2.pdf
    • http://sopabaka.garlinstainedglass.com/uploads/1/3/2/6/132695213/7997653.pdf
    • http://files.paisleyskinandlash.com/uploads/1/3/1/4/131436981/zikawisawomewel_wifosugo_vipuluvol_wedefe.pdf
    • https://cdn.shopify.com/s/files/1/0434/2385/8850/files/pumobimezukifelumuvukari.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/calculus_early_transcendentals_1st_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/73024911148.pdf
    • https://cdn.shopify.com/s/files/1/0434/9093/4949/files/tolovafozuralim.pdf
    • https://cdn.shopify.com/s/files/1/0433/4996/6998/files/sitedujobofapagunejosozi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1149/7366/files/canon_rebel_xsi_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/2782/3778/files/revozalerigedifupusixa.pdf
    • https://cdn.shopify.com/s/files/1/0438/0462/3010/files/97350853011.pdf
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/10081147224.pdf
    • https://cdn.shopify.com/s/files/1/0463/2890/5889/files/85309231440.pdf
    • https://cdn.shopify.com/s/files/1/0431/1062/9532/files/38785963920.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/73388820562.pdf
    • https://cdn.shopify.com/s/files/1/0433/9744/7836/files/75467272350.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_off00006811.bin
9cb929590d1fc2745b0e43d21f5ec7503ddce0345c802bb9fefb541b76788fb4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6811 5364 bytes
font_01_sfnt_off00007a47.bin
f68884f03a5084cfbd55afe3a538d53e4dfd2c900d31bf29fafe9e9836377c35
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A47 10208 bytes