Malicious PDF — malware analysis report

Static analysis result for SHA-256 f304d9c01eaa91ce…

MALICIOUS

PDF

44.7 KB Created: 2020-08-14 18:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90ac0236a54b31878d8a14e0d2e4dc39 SHA-1: 481a167035fcbf34651245f1083709c0d4939604 SHA-256: f304d9c01eaa91ce2cd1f633136108a720823305f083e5b9e59aa81b4f168de3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.003 Windows Command Shell

The PDF contains a link farm and a malicious redirector URL, indicating an attempt to drive traffic to potentially harmful sites. The presence of a "video song app pc" lure in the document body, combined with the "SE_LOLBIN_RUN_COMMAND" heuristic, suggests the document is designed to exploit user interest for malicious purposes, likely leading to further compromise. The redirector URL `https://ttraff.cc/pify?keyword=video+song++app+pc` is a primary indicator of this malicious intent.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=video+song++app+pc
    • http://files.jordanpriceart.co.uk/uploads/1/3/1/4/131454216/wozituvazifoxeb.pdf
    • http://files.octexan.com/uploads/1/3/0/7/130738903/f05cdcfb0b3ee5.pdf
    • http://suzir.nakitahogans.com/uploads/1/3/1/4/131454024/ripuridefipofoj-foken.pdf
    • https://cdn.shopify.com/s/files/1/0433/7867/1779/files/88977512862.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/14586018681.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/mamabaxetajoteru.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/aceite_esencial_de_mandarina.pdf
    • https://cdn.shopify.com/s/files/1/0439/3140/2395/files/english_classroom_language.pdf
    • https://cdn.shopify.com/s/files/1/0434/4758/2870/files/69407289691.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6661/files/noxigawazoteponirad.pdf
    • https://cdn.shopify.com/s/files/1/0430/3110/1603/files/5935741128.pdf
    • https://cdn.shopify.com/s/files/1/0440/6283/4853/files/catia_v6_assembly_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0429/0589/5075/files/alleluia_jubilate.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sefumiwizekoreletete.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_off00007104.bin
4f8762b28e33baff153561e9f49240727ad74d20036a15f04d88a0a1327d20f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7104 5080 bytes
font_01_sfnt_off00008262.bin
ff176e8f84ede092ecba25793084da11edd0f4038b3f0403f6301bf6e51f63a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8262 10388 bytes