Malicious PDF — malware analysis report

Static analysis result for SHA-256 24df12957a1c2c93…

MALICIOUS

PDF

42.7 KB Created: 2020-08-19 12:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a804af471bc62e945401ef9f873e2cb5 SHA-1: 06f1c28baab8294eb88aeb789ae38abe3ea53b50 SHA-256: 24df12957a1c2c93f2e303481171c4c15348e4ae4ce3b95ab0a44c3336548079
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to a 'car sale receipt template' and includes a link to a known malicious redirector. This redirector is likely used to obscure the final destination and potentially deliver a secondary payload. The presence of numerous external PDF links suggests an attempt to manipulate search engine results or distribute content through a link farm.

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.
  • 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=car+sale+receipt+template+word+free
    • http://nokupasiw.flowersindublin.com/uploads/1/3/1/4/131438759/2700326.pdf
    • http://wirema.osfl.org/uploads/1/3/0/8/130874601/dudolisoneg-xesitafino-bezoze.pdf
    • http://kemogelov.andrewwittkamper.com/uploads/1/3/0/8/130874359/jajulufan.pdf
    • http://wirema.osfl.org/uploads/1/3/0/8/130874601/dudolisoneg-xesi
    • https://cdn.shopify.com/s/files/1/0433/3410/7286/files/sitekuzekamizitonepap.pdf
    • https://cdn.shopify.com/s/files/1/0431/8206/3777/files/87101200846.pdf
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/pexinodolunuxerok.pdf
    • https://cdn.shopify.com/s/files/1/0430/0577/1939/files/moras.pdf
    • https://cdn.shopify.com/s/files/1/0431/3235/4727/files/centrifugal_blower_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/70039178385.pdf
    • https://cdn.shopify.com/s/files/1/0440/8023/4661/files/100_answered_prayer.pdf
    • https://cdn.shopify.com/s/files/1/0440/8773/8533/files/gukokom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78649322563.pdf
    • https://cdn.shopify.com/s/files/1/0437/4927/7845/files/oxford_discover_level_3.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/45917472372.pdf
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/82430206653.pdf
    • https://cdn.shopify.com/s/files/1/0439/1242/9723/files/formulaire_2020_ifi_2020.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_off00006aa4.bin
b1a951d2baae09f805f686ca914cfd4e657847637f1211b5f3b8b9f9bd819162
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA4 5296 bytes
font_01_sfnt_off00007ca1.bin
e2413dad42615315b15f4de0269f305f33b9b6443678f0660dca2d3f0151edfa
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA1 9656 bytes