Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f482467e37dd54e…

MALICIOUS

PDF

63.5 KB Created: 2020-08-03 02:54:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a73f84114de49cd9d1badd197420fd9a SHA-1: 778841095f1eac1e9469ea0b8ef3d2b61f131cee SHA-256: 3f482467e37dd54ebb5476ded23ce3a281328e55f6b323ad896e25a6fd56e540
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1071.001 Web Protocols

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.ru'. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is designed as an advance-fee fraud, likely involving a prize or parcel delivery. The presence of a malicious redirector suggests the intent is to lead the user to a phishing or malware distribution site.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=combine+rows+in+r
    • http://files.evesartistry.com/uploads/1/3/0/7/130739802/xariregi-fibebupolutebof-lisun-gexifivapuraf.pdf
    • http://files.sipanddrift.com/uploads/1/3/1/3/131379217/bopozi.pdf
    • http://files.mrsignworks.com/uploads/1/3/0/7/130738620/vigonoselarap-nuwagimoxe-pamitini-nifad.pdf
    • https://cdn.shopify.com/s/files/1/0438/1776/2973/files/c_windows_system32_drivers_etc_hosts.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3609/files/vinojufeka.pdf
    • https://cdn.shopify.com/s/files/1/0431/5391/6060/files/62942134956.pdf
    • https://cdn.shopify.com/s/files/1/0434/6147/6504/files/diwasirozogegifisuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/wuwukosedupatelen.pdf
    • https://cdn.shopify.com/s/files/1/0429/3804/0487/files/4687508823.pdf
    • https://cdn.shopify.com/s/files/1/0434/4587/8950/files/10083073647.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7828/files/skyburners_annex_review.pdf
    • https://cdn.shopify.com/s/files/1/0429/2031/2991/files/98647286740.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_off0000ad30.bin
8c684a87a73701e0e5f4a5d7276dc6a91415f88c6466f5821c3ccab36ab2ab77		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD30 4728 bytes
font_01_sfnt_off0000bd37.bin
a2127f0fb5a9dce9bffbf5c9c648c2201c2c3ae0f77edb49e8cd6a52ed8c9998		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD37 16828 bytes

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