Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf60618d541e95d0…

MALICIOUS

PDF

50.3 KB Created: 2020-08-23 16:18:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adbc6f30882ebbd93079feaff9fcda69 SHA-1: 279ac0874be1386896a2688e7a0e81b8f15e266e SHA-256: bf60618d541e95d03033ae5897e298a6ecae2814f86bfff901af8c7c902c3300
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text fragments and URLs that suggest a lure related to a 'complaint template excel'. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content. The PDF structure and embedded links are indicative of a phishing or scam attempt.

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.com/pify?keyword=complaint+template+excel
    • http://files.asthecrowfliesandco.com/uploads/1/3/2/7/132740285/ab819754e64.pdf
    • http://tidusi.notsogrownuppodcast.com/uploads/1/3/0/9/130969754/6482791.pdf
    • http://files.holmesscience.org/uploads/1/3/1/3/131380107/rodok.pdf
    • http://files.emeraldtoursgolf.com/uploads/1/3/0/7/130776864/3556304.pdf
    • http://konim.sjyibius.org/uploads/1/3/2/8/132814930/gaxinokomekitus.pdf
    • https://cdn.shopify.com/s/files/1/0448/1817/0018/files/66369708243.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/enlightened_journey_osrs_quick_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/69467093793.pdf
    • https://cdn.shopify.com/s/files/1/0441/2866/5752/files/american_heart_association_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0435/2632/4383/files/32568819355.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4492/files/55486501412.pdf
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/jefabegelidafasiduk.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/xujoter.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/41835589952.pdf
    • https://cdn.shopify.com/s/files/1/0438/2497/1936/files/1706022331.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_off00008a2a.bin
4e250ccbd26b753bd6eb608f801b091cf2e91b54b8ae72f4c25ea4c276ba3646		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2A 4776 bytes
font_01_sfnt_off00009a5b.bin
8b93940d7ce8603ff2b492f320ee6332fe16c6f15f26291712624d6e78ed0e17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A5B 9948 bytes

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