Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5421a71296a3c53…

MALICIOUS

PDF

43.1 KB Created: 2020-09-09 16:51:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b05474773aeaf3d956b51eea64cf67a SHA-1: c95cab48031716b09547f907e6ba244ff23661f3 SHA-256: d5421a71296a3c53d2e6971a94d18c2a55a6e978ff0334ea0817d94751221a31
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to suspicious domains. One critical heuristic identified a link to a known malicious redirector infrastructure, specifically 'https://ttraff.link/wix?keyword=best+tower+defense+android+games'. The document body also contains this URL and other PDF links, suggesting a link farm or redirection scheme to distribute malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering through deceptive links.

Heuristics 3

  • 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.
  • 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.link/wix?keyword=best+tower+defense+android+games
    • http://files.csoboston.com/uploads/1/3/1/4/131438059/mejujobuzegad_tabekus_gozevamukexa.pdf
    • http://files.homlivingston.org/uploads/1/3/0/9/130969831/jexosogukap_jokan.pdf
    • http://files.evesartistry.com/uploads/1/3/0/7/130739802/xariregi-fibebupolutebof-lisun-gexifivapuraf.pdf
    • http://fatovemu.nihc.ca/uploads/1/3/2/6/132683138/pezofugamokuk-fabipa-puzejulagog.pdf
    • http://xupon.selfexposed.co/uploads/1/3/2/7/132712593/7944472.pdf
    • https://cdn.shopify.com/s/files/1/0429/4243/1395/files/vw_vanagon_workshop_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5671/files/lavosixo.pdf
    • https://cdn.shopify.com/s/files/1/0436/7309/2246/files/napodota.pdf
    • https://cdn.shopify.com/s/files/1/0439/0617/1048/files/90511416293.pdf
    • https://cdn.shopify.com/s/files/1/0431/1279/2225/files/frp_bypass_apk_android_7._1._2.pdf
    • https://static.usrfiles.com/ugd/0e9fc2_523e24e6d2c84c86ad51e44bcd38b712.pdf
    • https://static.usrfiles.com/ugd/b8c837_e8ade5e9a72a46d2a013f43be6f77b37.pdf
    • https://static.usrfiles.com/ugd/0a052f_4d5e43f193d04180a2275f956dfeef0f.pdf
    • https://static.usrfiles.com/ugd/67e251_5d6e59b897a745bd89f7f7f7ebce89f7.pdf
    • https://cdn.shopify.com/s/files/1/0434/5187/5481/files/2757552646.pdf
    • https://cdn.shopify.com/s/files/1/0428/3806/5319/files/alveoloplastia_simple.pdf
    • https://cdn.shopify.com/s/files/1/0431/1583/9645/files/jurnal_anemia_megaloblastik.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48787523288.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_off00006922.bin
c8033d95c7dc993e72184046f26960551808f55c25f7091d8be554cee4e54b94
pdf-font-stream PDF embedded font (sfnt) at offset 0x6922 5336 bytes
font_01_sfnt_off00007b4b.bin
9a238b024a78d397bf6986932dbf022efb91931a843508b09031de4abc2624b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4B 10756 bytes