Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff975c9eed3a1b37…

MALICIOUS

PDF

43.2 KB Created: 2020-08-18 17:32:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05704f9b980718cfa2e8d1fad155a51e SHA-1: 61b551cf338cb7a7561fb6d448e4dc2835dfb7d1 SHA-256: ff975c9eed3a1b376ff053a42d13994f6f6c2fe4f2a2985cca1c274c968e3a04
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 'https://ttraff.ru/pify?keyword=plague+inc+apk+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to a Shopify domain that is also present in the document body. The ML classifier strongly flagged this PDF as malicious. The presence of these elements suggests a phishing or malware distribution 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.ru/pify?keyword=plague+inc+apk+free
    • http://files.advancedmedphysics.com/uploads/1/3/1/4/131406391/selumafijefafor.pdf
    • http://jovime.thereserveatorangetree.com/uploads/1/3/0/9/130969060/puferatowi.pdf
    • http://borumonu.loveaffairwiththyself.com/uploads/1/3/0/7/130738971/97548bee.pdf
    • https://cdn.shopify.com/s/files/1/0432/6958/7104/files/sales_manager_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0436/9501/4042/files/74676928006.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/31635825965.pdf
    • https://cdn.shopify.com/s/files/1/0432/9842/2934/files/katori_blouse_cutting_pattern.pdf
    • https://cdn.shopify.com/s/files/1/0438/3821/0205/files/luluxidabemagujodujive.pdf
    • https://cdn.shopify.com/s/files/1/0437/8545/3730/files/2451936567.pdf
    • https://cdn.shopify.com/s/files/1/0429/2050/9596/files/wirewekuzoged.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/73940985099.pdf
    • https://cdn.shopify.com/s/files/1/0431/1495/4908/files/52302041204.pdf
    • https://cdn.shopify.com/s/files/1/0432/2738/1920/files/wefuwulududinul.pdf
    • https://cdn.shopify.com/s/files/1/0431/1878/8774/files/physiology_of_respiration_in_mammals.pdf
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/jubafaronuvon.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_off00006bc7.bin
5acfb0ff136ed755cd9abc70af576818dd722ff422ed472a8a7e3309e9c9119d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC7 5072 bytes
font_01_sfnt_off00007d15.bin
29b138bcfc3f36dc2b3407acc35a5f76dc4ac15a92a58ac5ebe77b14fb3be565		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D15 10208 bytes

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