Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d3e68f0a71a9ef…

MALICIOUS

PDF

46.6 KB Created: 2020-08-22 09:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78c75057c9d78e1aecb423a13b6bc3a3 SHA-1: 0987557a2d53390d718b04089104fedb1817c9e5 SHA-256: f6d3e68f0a71a9ef0dd6345318eeb24f3f375b708273e08d1ea23329bcd60c8c
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body and heuristics suggest a lure for MFA or password recovery, likely to harvest credentials. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for malicious content. No scripts were extracted from this sample.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=yahoo+email+recovery+form
    • http://files.childsafechildproofing.com/uploads/1/3/0/7/130775822/tijekofa_gesede.pdf
    • http://files.greataytonlodge.co.uk/uploads/1/3/1/8/131871424/9730639.pdf
    • https://cdn.shopify.com/s/files/1/0439/0024/0024/files/63808331947.pdf
    • https://cdn.shopify.com/s/files/1/0430/4073/5381/files/20712117655.pdf
    • https://cdn.shopify.com/s/files/1/0432/9704/6696/files/pupabu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0372/4455/files/gekitiwalemizukewoveni.pdf
    • https://cdn.shopify.com/s/files/1/0446/9296/3484/files/hattiesburg_ms_accident_reports.pdf
    • https://cdn.shopify.com/s/files/1/0432/4599/4146/files/polumaripivagovew.pdf
    • https://cdn.shopify.com/s/files/1/0432/8315/3056/files/trigonometric_graph_paper.pdf
    • https://cdn.shopify.com/s/files/1/0430/7651/8049/files/89456540417.pdf
    • https://cdn.shopify.com/s/files/1/0436/7794/1913/files/ctet_2019_question_paper.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_off00006cad.bin
bf6413a305b566292741113f3b814db49cd516602ae16be60229f8aa42a54794
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAD 4668 bytes
font_01_sfnt_off00007c90.bin
91a3aa948fa491eedef78402cf629513381c48bb21ed04f3f347b0b42dfbf6c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C90 10292 bytes
font_02_sfnt_off00009fc4.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FC4 4324 bytes