Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fdc80f0f1ce8f43…

MALICIOUS

PDF

115.8 KB Created: 2020-08-19 12:03:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9b2c166abf0284c6d278fa651bec468 SHA-1: 0e7623df8a3562340ced2211ec0e9768d01dcf0e SHA-256: 3fdc80f0f1ce8f436b3b3eaa88a02a807d837281b1f958d6b4dd57320854f462
168 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, specifically using a fake invoice or payment lure. The document body contains the text 'Trading account format excel' and an embedded URL that redirects to 'https://ttraff.cc/pify?keyword=trading+account+format+excel'. This suggests the document's purpose is to trick the user into clicking the link, likely leading to a phishing or malware download site.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.cc/pify?keyword=trading+account+format+excel
    • http://files.someonecaresministry.org/uploads/1/3/2/6/132695428/e20f5e5e6b855da.pdf
    • https://cdn.shopify.com/s/files/1/0430/4492/9690/files/mipapudamiveranaruxaza.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/bixogeba.pdf
    • https://cdn.shopify.com/s/files/1/0434/4807/4396/files/11794048211.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/18865164306.pdf
    • https://cdn.shopify.com/s/files/1/0441/2263/6440/files/jquery_ajax_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/27915729376.pdf
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/84888285174.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7095/files/76227250272.pdf
    • https://cdn.shopify.com/s/files/1/0436/8501/9801/files/bleach_fade_to_black_english_sub.pdf
    • https://cdn.shopify.com/s/files/1/0429/3964/6108/files/50372382365.pdf
    • https://cdn.shopify.com/s/files/1/0436/4913/8846/files/android_version_distribution_2019.pdf
    • https://cdn.shopify.com/s/files/1/0431/4179/1895/files/63071197741.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_off00018b27.bin
be1684743b49731f5c2076048250133f8e5b122fa9d07338da3cf4b2f36e5000
pdf-font-stream PDF embedded font (sfnt) at offset 0x18B27 5180 bytes
font_01_sfnt_off00019cad.bin
1845b352af41d2e242b49204f26eb7d9715658e4b45baef2d239fbd2fcf69661
pdf-font-stream PDF embedded font (sfnt) at offset 0x19CAD 10984 bytes