Malicious PDF — malware analysis report

Static analysis result for SHA-256 2004dd0f6fdf1846…

MALICIOUS

PDF

43.0 KB Created: 2020-05-10 00:29:41 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: baf43c533b5fbde00f62e78952558b5b SHA-1: 18268997f68788c8975783ec8e37505e92af1bb5 SHA-256: 2004dd0f6fdf184680998b52b600fa66bb361e1df8016291c888c8420caa7363
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of external links, many of which point to other PDF files hosted on similar domains. This behavior is indicative of a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains references to 'brain teasers for interviews with answers pdf' and the wkhtmltopdf application, suggesting a lure to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://a1mixology.com/uploads/1/3/0/5/130551049/130551049.html#brain+teasers+for+interviews+with+answers+pdf
    • http://tracys-styling-salon.com/uploads/1/3/0/8/130813461/faxisozijape.pdf
    • http://mariaemauz.com/uploads/1/3/0/2/130291707/kegoranalosetironono.pdf
    • http://thedabguru.com/uploads/1/3/0/7/130775257/2614722.pdf
    • http://ariniyla.com/uploads/1/3/0/4/130489446/gufivoratutomevedufi.pdf
    • http://houseflipit.com/uploads/1/3/1/3/131379031/jedar.pdf
    • http://pinkmoo.jp/uploads/1/3/0/6/130603922/1c6636a6.pdf
    • http://smartupfinance.com/uploads/1/3/0/6/130604508/baxuposi.pdf
    • http://romanianbritishsociety.org/uploads/1/3/1/4/131406950/xapagisupo.pdf
    • http://bajhouse.com/uploads/1/3/0/2/130287548/1aebd81.pdf
    • http://kadilynnco.com/uploads/1/3/0/5/130543053/3343914.pdf
    • http://ovlacmusic.com/uploads/1/3/0/3/130312985/a7ed20efdadc461.pdf
    • http://thedanceestablishment.net/uploads/1/3/0/5/130588505/f669b2625.pdf
    • http://rgasoftware.com/uploads/1/3/0/8/130814297/029d47c.pdf
    • http://thepowerofzen.com/uploads/1/3/0/2/130272260/wezezanakaz.pdf
    • http://muskokagrandview.com/uploads/1/3/0/5/130550876/pejebakiti_zupogake_gagogubudug_zuxusog.pdf
    • http://stonecreationsbycolleen.com/uploads/1/3/0/4/130488316/dasematitezalupuxu.pdf
    • http://bridge56.com/uploads/1/3/1/6/131606968/1e730b46.pdf
    • http://elite-fitness-redditch.com/uploads/1/3/1/0/131070161/fazefemujiw.pdf
    • http://zapchasti-online.space/uploads/1/3/1/3/131383839/dda7104d.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c95.bin
1984145e2629e97afa2e1fe672ff0b73c8586d7df747ad5930d3cff24ae8f576		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C95 10652 bytes

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