Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce7e42f27667370b…

MALICIOUS

PDF

40.6 KB Created: 2020-08-27 23:53:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b2bc1597c50043dc061a6d1e50186b0 SHA-1: 6dc3f143902dca2da9f174df7d64f91537e97f83 SHA-256: ce7e42f27667370b4b82c04d414cf66e6e14d9423c6ba0cb5c691f9a102f1b76
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, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=maxis+drone+free+gun', is designed to lure users with a promise of free items. The document also contains a large number of embedded URLs, many pointing to Shopify, which is indicative of a link farm used for SEO manipulation or to host malicious content. The ML classifier strongly supports the malicious verdict.

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=maxis+drone+free+gun
    • http://moxovuw.omhathayoga.com/uploads/1/3/1/3/131398473/3808615.pdf
    • http://files.plasynant.cymru/uploads/1/3/1/4/131407625/1376472.pdf
    • http://files.catherinehoodillustration.com/uploads/1/3/0/9/130969371/2403899.pdf
    • http://wojawu.tony-cimino.com/uploads/1/3/0/7/130775244/5467614.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/63850209534.pdf
    • https://cdn.shopify.com/s/files/1/0435/6482/6773/files/virisonitibud.pdf
    • https://cdn.shopify.com/s/files/1/0435/3140/3423/files/91844315429.pdf
    • https://cdn.shopify.com/s/files/1/0436/3426/2169/files/3d_animation_courses_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/57819317795.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/themes_of_metaphysical_poetry.pdf
    • https://cdn.shopify.com/s/files/1/0435/3101/0199/files/biwowaditotizojudalas.pdf
    • https://cdn.shopify.com/s/files/1/0431/8317/7887/files/52489209830.pdf
    • https://cdn.shopify.com/s/files/1/0430/7386/3842/files/menomelemolafotim.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/mobile_champions_league_of_legends_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0363/3051/files/73849231966.pdf
    • https://cdn.shopify.com/s/files/1/0435/5883/0229/files/jexuvizekuru.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_off0000619c.bin
606f9270041db4348f996e14b42a9519b93e04e5a3908c61c6845c4ace40b84a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x619C 5116 bytes
font_01_sfnt_off00007319.bin
13b222d8905aa7b1c69f5f0e73c7ebb359f4ecc592907be9c363d449d4e4d086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7319 10092 bytes

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