Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1fb07aac417feaa…

MALICIOUS

PDF

55.3 KB Created: 2020-08-04 18:53:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc4d347d42713301c1d13d8382d8a7ee SHA-1: 03eb95dff6c5aa717b2ff16a7f0900e730be6452 SHA-256: c1fb07aac417feaa74d63a7437b5c5a76281dd12e91b3bf7ea0f065e8da3f38e
136 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, with embedded URLs pointing to suspicious domains. The document body, though heavily obfuscated, contains text suggesting a 'Nationwide mortgage statement pdf' lure, combined with urgency language. The primary malicious IOC is the ttraff.ru redirector, which is likely used to funnel victims to further malicious content.

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.
  • 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
  • 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.ru/pify?keyword=nationwide+mortgage+statement+pdf
    • http://files.makeasmartstart.com/uploads/1/3/2/3/132303060/jiwad-mekujo.pdf
    • http://jilom.design-disability.org/uploads/1/3/0/9/130969060/vuvuzemup_xawowexu_ridakepenowog.pdf
    • http://files.dalmatiner-von-kalina.com/uploads/1/3/1/6/131637316/jibiroxogup-gikubapikowo-kojasaxejubo.pdf
    • http://files.dreamcapturestudio.com/uploads/1/3/0/7/130775432/295859.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/54562486321.pdf
    • https://cdn.shopify.com/s/files/1/0432/4084/9575/files/45040631029.pdf
    • https://cdn.shopify.com/s/files/1/0432/9832/4638/files/sapisamukuwavozokelob.pdf
    • https://cdn.shopify.com/s/files/1/0433/8978/0124/files/femoboravefajerufizukuru.pdf
    • https://cdn.shopify.com/s/files/1/0428/0044/7655/files/bonufubalaxodate.pdf
    • https://cdn.shopify.com/s/files/1/0430/5931/4841/files/21592026801.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kitona.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/rewedix.pdf
    • https://cdn.shopify.com/s/files/1/0431/7347/8560/files/musugalimapaxeletureninu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1112/1057/files/saperuzalilib.pdf
    • https://cdn.shopify.com/s/files/1/0429/6038/8259/files/how_to_make_a_8muse_account.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6780/files/77846998489.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_off00009988.bin
8b0259d3282565eb522c05764373e5a096e4fabef7fafe708a176a3b9838dab7
pdf-font-stream PDF embedded font (sfnt) at offset 0x9988 5388 bytes
font_01_sfnt_off0000abe7.bin
804c3e6f025d1e8682e4d50c069400c315c816be4d1736ae193678deebd1d030
pdf-font-stream PDF embedded font (sfnt) at offset 0xABE7 10792 bytes