Malicious PDF — malware analysis report

Static analysis result for SHA-256 486280cc4cd47278…

MALICIOUS

PDF

43.8 KB Created: 2020-08-10 21:55:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0234ee4801aa0614783c7219a322bcba SHA-1: 680531a8ef25ad8165291192281db81ec06d70a0 SHA-256: 486280cc4cd472781baef8a0b1999b68cc41b9177da978e94e8dcd70736fb36a
160 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link to 'ttraff.ru' is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL, suggesting it's the primary lure. The presence of a 'LOLBin run command' heuristic indicates that the PDF is likely designed to execute commands or exploit vulnerabilities, further supporting the 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.ru/pify?keyword=three+blind+mice+short+story+pdf
    • http://bawum.thecheltenhamastrologer.co.uk/uploads/1/3/1/4/131453574/b2675c9.pdf
    • http://files.ryansbarattadesign.com/uploads/1/3/0/9/130969003/pinej.pdf
    • http://files.someroomsoffortune.com/uploads/1/3/1/3/131379554/c5d37603d264bd8.pdf
    • http://files.northernbugwear.ca/uploads/1/3/1/4/131407165/modofuda-tevuravikat-xejaduve-xewuzedalupus.pdf
    • http://files.rebelrustictexas.com/uploads/1/3/1/4/131438658/vipefupefugafuwo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/46918507265.pdf
    • https://cdn.shopify.com/s/files/1/0430/8529/9876/files/lesesavekitexujusorake.pdf
    • https://cdn.shopify.com/s/files/1/0432/8462/7624/files/warhammer_40k_8th_edition_genestealer_cult_codex.pdf
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/96197249746.pdf
    • https://cdn.shopify.com/s/files/1/0434/8814/9668/files/68816374147.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/denezenurasim.pdf
    • https://cdn.shopify.com/s/files/1/0428/9354/1532/files/goniludusefogojuvitifeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0811/files/96845955676.pdf
    • https://cdn.shopify.com/s/files/1/0431/2426/1018/files/12300673526.pdf
    • https://cdn.shopify.com/s/files/1/0428/9223/0823/files/43720253260.pdf
    • https://cdn.shopify.com/s/files/1/0438/4115/9333/files/curl_post_data.pdf
    • https://cdn.shopify.com/s/files/1/0428/6421/4182/files/advaita_bodha_dipika.pdf
    • https://cdn.shopify.com/s/files/1/0433/9390/8892/files/75425320124.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_off00006afe.bin
0068246a2eb75362f41abd4c91283fa26bf78cd3553a2fdc883288a31e6a4812
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFE 5376 bytes
font_01_sfnt_off00007d15.bin
a1eaf8405f65fa5b0efd7455b9c94091097efac0dc58f0a18aeac6c895a82679
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D15 10340 bytes