Malicious PDF — malware analysis report

Static analysis result for SHA-256 25e0812a7c7fc485…

MALICIOUS

PDF

44.1 KB Created: 2020-08-10 23:20:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07d3cd1c75e8b7db93b47fdbf09d181b SHA-1: a4af08dae05ee609b68c8b9f2b9e58cf1deb6452 SHA-256: 25e0812a7c7fc485616bc040d49f0b68c2abea00cb07a05ceac169c7a82b58bd
168 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to Shopify domains, and one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=marriage+certificate+format+pdf', suggesting a lure to download or view a document related to marriage certificates. This aligns with a payment redirection lure, a common tactic in business email compromise attacks.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=marriage+certificate+format+pdf
    • http://rorogeloz.southerncountrykennels.com/uploads/1/3/0/8/130814328/6594c.pdf
    • http://files.southernstaraccounting.com/uploads/1/3/1/8/131871864/3998487.pdf
    • http://files.thoughtfulduck.com/uploads/1/3/0/9/130969655/82d14.pdf
    • http://files.catherinehedrich.com/uploads/1/3/0/7/130775304/9562005.pdf
    • https://cdn.shopify.com/s/files/1/0440/0994/7301/files/51816550677.pdf
    • https://cdn.shopify.com/s/files/1/0437/5199/7592/files/tuwodeduvafi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4434/6792/files/97506640711.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/fewokawozoxisexemabife.pdf
    • https://cdn.shopify.com/s/files/1/0432/5035/2296/files/9394209009.pdf
    • https://cdn.shopify.com/s/files/1/0431/2183/6193/files/85918914001.pdf
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/lajapofaki.pdf
    • https://cdn.shopify.com/s/files/1/0430/9565/4554/files/85275887230.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/44067717882.pdf
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/77565336760.pdf
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/bedadezezobopugetaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/5053/9940/files/87403017480.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_off00006ef0.bin
a9704cd0cf9fb5a804be8b86ca1cb865f675ec64b1ff1d088c0d6a3099dd59d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF0 5272 bytes
font_01_sfnt_off000080ca.bin
8b9e3fcb64f46a33d9a08815ef6de96676628e04c35ce2fef375006776871962
pdf-font-stream PDF embedded font (sfnt) at offset 0x80CA 10028 bytes