Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfd846189634caac…

MALICIOUS

PDF

52.5 KB Created: 2020-03-31 06:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: cfa026cabf30414e01185c7d2f4771d5 SHA-1: e1e643ad767e74df97afd348ee31fc91da632e02 SHA-256: cfd846189634caac85fa449f0f4e4fc9300de8c3d35ea48986243f76970075a6
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was identified as malicious by an ML classifier and contains a significant number of external links, indicating a link farm or SEO spam tactic. The primary purpose appears to be directing users to potentially malicious content hosted on various domains, such as thecandistore.com and chewoncakes.com.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://chewoncakes.com/uploads/1/3/1/3/131380895/131380895.html#tamu+dine+on+campus+hours
    • http://thecandistore.com/uploads/1/3/0/5/130550828/jadulumev.pdf
    • http://ytfavs4u.com/uploads/1/3/0/6/130621257/d03b7bff2e.pdf
    • http://soviet-shrek.com/uploads/1/3/0/2/130291696/balulovireg.pdf
    • http://lamethodewinningpitch.com/uploads/1/3/0/2/130274256/5396370.pdf
    • http://sharedriveapp.com/uploads/1/3/0/5/130541000/gifezina-sezisabumela.pdf
    • http://thingswecantbuy.com/uploads/1/3/0/7/130774970/683553.pdf
    • http://thekansascityhomeinspector.com/uploads/1/3/0/4/130488754/18ab919c5055c.pdf
    • http://eccevideo.org/uploads/1/3/0/9/130969926/xilefeke.pdf
    • http://verniceartmagazine.com/uploads/1/3/0/3/130323892/xivokugipowe.pdf
    • http://sonsofbenmovie.com/uploads/1/3/0/3/130323465/4040291.pdf
    • http://twopaddlesfish.com/uploads/1/3/0/5/130551282/famevovaruromu-sajomi-duxamafamifel-kobox.pdf
    • http://mypeopleindiandolls.com/uploads/1/3/1/0/131070656/97ae6b50.pdf
    • http://hillcitytaxprep.com/uploads/1/3/1/4/131407655/fejinezuzinoguseleme.pdf
    • http://jchomesales.com/uploads/1/3/0/6/130620390/xanusupafofixozijo.pdf
    • http://northerndiversityawards.com/uploads/1/3/1/3/131384249/5073171.pdf
    • http://sanblastoursislands.com/uploads/1/3/1/3/131383708/330238.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_off00009b4e.bin
e78bb351a38fd02b5e833b1fa84b92ed15608d53be67ec39e8a827ba197def4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B4E 8376 bytes
font_01_sfnt_off0000bb80.bin
41d5c9cb4d60b7530e3cfd93a78efd430fe179aa57a8296e74fb8a971da4b0ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB80 2600 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.