Malicious PDF — malware analysis report

Static analysis result for SHA-256 c188b287a2e8e89c…

MALICIOUS

PDF

38.1 KB Created: 2020-08-20 21:22:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 733814bd5c1840901c2f9d280ed48347 SHA-1: 63f4de1bb575f0ac125ee0fdc05aab99f13a04cd SHA-256: c188b287a2e8e89c1b003c567a39b4fd3971f2cc369dea1162cc4e95a99263d1
140 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of a link farm and a callback phishing lure further supports the malicious intent of directing users to external, potentially harmful, content.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.com/pify?keyword=descargar+antivirus+para+android+apk+uptodown
    • http://wepaxuma.faithymystory.com/uploads/1/3/0/7/130740434/wuzisituboser.pdf
    • http://files.mountainmattressaz.com/uploads/1/3/0/7/130776275/besunigutixo.pdf
    • http://files.teamfitnessonline.com/uploads/1/3/1/4/131482821/d9f955167.pdf
    • http://files.camarasailing.com/uploads/1/3/0/7/130775817/zavelewotaru.pdf
    • http://gotafan.puertoricandj.com/uploads/1/3/2/8/132814439/38e20004.pdf
    • https://cdn.shopify.com/s/files/1/0433/5665/1669/files/feroz_ul_lughat_arabic_to_urdu_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1089/files/fekitenowev.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/60270573366.pdf
    • https://cdn.shopify.com/s/files/1/0440/7335/3366/files/what_is_electric_current.pdf
    • https://cdn.shopify.com/s/files/1/0434/4836/9319/files/mirelotasuwuxisa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.pdf
    • https://cdn.shopify.com/s/files/1/0431/2544/0669/files/69454143459.pdf
    • https://cdn.shopify.com/s/files/1/0427/4618/3847/files/ripekepovubevivuzupojijap.pdf
    • https://cdn.shopify.com/s/files/1/0435/9133/6099/files/13106906166.pdf
    • https://cdn.shopify.com/s/files/1/0448/4333/5837/files/geometry_shapes_names.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_off00005746.bin
91bd82fcd407f12493dabaaf79cfec3bf5fc07b66b177f3aed61146775b9cbde
pdf-font-stream PDF embedded font (sfnt) at offset 0x5746 5424 bytes
font_01_sfnt_off000069e2.bin
5a3b322e51bf99440f93644c757a2f0dbbbffb9087f4cf1fabe03e334410a6fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x69E2 9988 bytes