Malicious PDF — malware analysis report

Static analysis result for SHA-256 d76d8c892fbf1bf2…

MALICIOUS

PDF

41.5 KB Created: 2020-08-21 06:42:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98aa3e8d774130c44d9b5ba67f2ff385 SHA-1: 9f96a6cf2905457572fc30709c739c0a50b161ce SHA-256: d76d8c892fbf1bf2799382e3dd01f784dc13c4c1394d69375186c8af1f19ecfe
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.com, which is designed to lure users into clicking on it by presenting a seemingly relevant topic. The document body, though heavily obfuscated, contains the same URL and keywords related to caller ID blocking applications. This suggests a phishing or scam attempt, likely to lead the user to a malicious site or download further malware.

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=caller+id+block+calls+texts+apk
    • http://lefaxo.perfectfixhandyman.com/uploads/1/3/0/7/130776065/vowarepel-gunos.pdf
    • http://files.lansingweddingdjs.com/uploads/1/3/0/8/130874398/5ed6b.pdf
    • http://files.recrates.co/uploads/1/3/0/8/130813756/5658906.pdf
    • http://files.drjester.com/uploads/1/3/1/8/131856039/doromatilesef.pdf
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/kenmore_washer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/2401/5783/files/wonagobagaxofagip.pdf
    • https://cdn.shopify.com/s/files/1/0437/5435/6897/files/44571418618.pdf
    • https://cdn.shopify.com/s/files/1/0432/4520/7714/files/97157049916.pdf
    • https://cdn.shopify.com/s/files/1/0428/8043/4342/files/tofopaxixasivulorikifufe.pdf
    • https://cdn.shopify.com/s/files/1/0437/5783/0298/files/dikuxivubosedevedudo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1648/6040/files/31271316498.pdf
    • https://cdn.shopify.com/s/files/1/0447/9506/8567/files/sadness_and_sorrow_piano_midi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/85250376109.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_off00004f2a.bin
b1ae3bea5ce76fcd61c14bad05279f0d6acd9b72187836efbdf8263595f6a0d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F2A 5244 bytes
font_01_sfnt_off00006107.bin
21bc46d0914dc5e732d1bb9f3b3be9609e65169a5cf4ae8fbc7f7578e4f1b243		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6107 10152 bytes
font_02_sfnt_off000083ef.bin
189d60c719f4ad010170093188c4aaf375f7d541ff0900e7accfc6e0ca5188d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83EF 16204 bytes

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