Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3c94a576025a7dd…

MALICIOUS

PDF

39.7 KB Created: 2020-08-18 19:32:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 400eb4e5e3f40fc460aeb569676b38c3 SHA-1: dbb454ac830b85c6b4b2f93ae97c0fbe8a1f5b00 SHA-256: b3c94a576025a7dd8a064f457306ebca4982d00a995104640e07b979deade122
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=blade+2+soundtrack++free'. This, combined with a PDF link farm heuristic, indicates a strong attempt to redirect users to malicious content under the guise of a soundtrack download. The document body, though heavily obfuscated, also contains the same malicious URL and other PDF links, reinforcing the lure. No scripts were extracted from this sample.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=blade+2+soundtrack++free
    • http://files.staceydrago.com/uploads/1/3/1/4/131483391/5344998.pdf
    • https://cdn.shopify.com/s/files/1/0435/4008/6935/files/48611039557.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/brawl_stars_mod_apk_android_plus_1.pdf
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/11916651594.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/70314354958.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/durusibowipeze.pdf
    • https://cdn.shopify.com/s/files/1/0430/6511/4775/files/98035618314.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0247/files/sirerorok.pdf
    • https://cdn.shopify.com/s/files/1/0435/6807/0824/files/nefutigaluvulexogege.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_off00005ea7.bin
22290733268b38003ecf517729dc1c609244bf2374e064e7e1f3468bc6fe0f1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA7 5260 bytes
font_01_sfnt_off00007095.bin
e97dc2561d778a1e440b66f218f40164cc84ca015bca4bc681c3c876be55cb0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7095 9896 bytes

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