Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6594415a370c69f…

MALICIOUS

PDF

41.9 KB Created: 2020-08-21 12:27:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9be01f0f7042e9800029de0f0c39e68b SHA-1: 6c3e9d7a6d4cfa9682386dcf378d95ef5f22fcef SHA-256: a6594415a370c69f8d0051887e949d64c5ed08d5ed2c9d4d10318db37138c131
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'. This URL is presented within the document body, disguised as a 'Chalice of opulence upgrade guide'. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary malicious URL is 'https://ttraff.com/pify?keyword=chalice+of+opulence+upgrade+guide', which likely serves as a gateway to a phishing or malware distribution site.

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=chalice+of+opulence+upgrade+guide
    • http://kewet.cornellactuarialsociety.com/uploads/1/3/0/9/130969627/rojikavugikilej-xavukoponupi-litix-vipewoduzafomom.pdf
    • http://files.olivia-meraki.com/uploads/1/3/1/3/131398308/dadad.pdf
    • http://jupif.luxtonemedia.com/uploads/1/3/0/8/130814328/fe3835499.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/xogudirugex.pdf
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/wafer_paper_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/1248/8348/files/consonant_blends_worksheets_for_grade_4.pdf
    • https://cdn.shopify.com/s/files/1/0431/7796/7778/files/5931324918.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/talasujudoponagukopigap.pdf
    • https://cdn.shopify.com/s/files/1/0440/8187/3048/files/19540521136.pdf
    • https://cdn.shopify.com/s/files/1/0432/2882/3719/files/koweroze.pdf
    • https://cdn.shopify.com/s/files/1/0434/6000/1957/files/36094116659.pdf
    • https://cdn.shopify.com/s/files/1/0428/6555/7671/files/47947044005.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_off000067b1.bin
0c549545851ad8ae4ca0310bb8d7c4a9a242354b08499dbde643f71c0fbec123		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67B1 5144 bytes
font_01_sfnt_off00007920.bin
9b37fc9ed693a7f9a48711da21301a132ea193917a9039829e9f646c75b64766		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7920 9964 bytes

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