Malicious PDF — malware analysis report

Static analysis result for SHA-256 dea70d38729b44bb…

MALICIOUS

PDF

43.9 KB Created: 2020-08-22 19:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acd78afa4e446fcc85dc16874940493c SHA-1: 47b32f95de65f11d9e379ee32f128a9ecebab03c SHA-256: dea70d38729b44bbf55c8ee632e308b42867162a193dd213eeb8bd3ae6e82e6d
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=marvel+strike+force+mod+apk+data'. This URL is presented within the document body, disguised as a download for game-related content. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is the most critical IOC, as it likely leads to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=marvel+strike+force+mod+apk+data
    • http://merolo.camptesahe.com/uploads/1/3/2/6/132696067/b8b9c90.pdf
    • http://files.meadowbrookpololodge.com/uploads/1/3/0/9/130968996/tagutonoki-mavutinuwav.pdf
    • https://cdn.shopify.com/s/files/1/0430/5505/5002/files/59496698897.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9236/files/90663912316.pdf
    • https://cdn.shopify.com/s/files/1/0433/5114/6650/files/sinudomuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6590/9143/files/rojodavevudadawafeguwa.pdf
    • https://cdn.shopify.com/s/files/1/0434/5063/0296/files/goviduzejigasiwaz.pdf
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/manewazidiwumoki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dewubi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/18774331471.pdf
    • https://cdn.shopify.com/s/files/1/0447/1390/2234/files/94983065963.pdf
    • https://cdn.shopify.com/s/files/1/0435/9208/9759/files/92610041461.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8933/files/komegabamus.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000567a.bin
78fec267923ec718d88861e46a83a255cae5a734473ec14cfe5ac58d467edc4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x567A 5428 bytes
font_01_sfnt_off000068eb.bin
7d5f985b281fef254a8bf03b6f1959ec13154c45aa2edd8b522685e8291536ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68EB 10852 bytes
font_02_sfnt_off00008d7a.bin
bdc2bc4f5e798a784232a795332b8aa31f968e1bd6130ecf5aad562764645bd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7A 16136 bytes

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