Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ea60e500a059cdd…

MALICIOUS

PDF

45.4 KB Created: 2020-04-09 00:44:09 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b5ccfc3d8ea922f96e755be7ba56766b SHA-1: 3a4a1b3b1f7757178f62be8b7ead5b468c9b6ad3 SHA-256: 7ea60e500a059cdd74f0f6ceb61b61785be1e669fb27c364fd2593fedf9c49dd
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains a lure related to a "Rocket lawyer affiliate program" and is heavily populated with external links. The heuristic PDF_SEO_LINK_FARM indicates a mass of external PDF links, suggesting a link farm or SEO poisoning tactic. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves redirecting users to a network of external sites.

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://holanomadas.com/uploads/1/3/0/7/130738806/130738806.html#rocket+lawyer+affiliate+program
    • http://mcleodsfurniturerestoration.com/uploads/1/3/0/2/130271038/3c090.pdf
    • http://staclaritasc.com/uploads/1/3/1/3/131398563/pumamerababele-zuxuteturegewaf-tizutipak-linaxiwekape.pdf
    • http://derby254.com/uploads/1/3/1/3/131382078/wetijevubirafekujo.pdf
    • http://seeatlsights.com/uploads/1/3/0/4/130488661/369957.pdf
    • http://kaleidoscope.photos/uploads/1/3/0/7/130739233/6536775.pdf
    • http://sanjuanstorage.net/uploads/1/3/0/7/130776041/2527793.pdf
    • http://darajainternational.com/uploads/1/3/0/4/130483337/2406242.pdf
    • http://familychildrenscenter.com/uploads/1/3/0/5/130551461/porawipafeb-nilal-kapezavudub-forifijuderok.pdf
    • http://motionfuels-arkansas.com/uploads/1/3/0/7/130740066/kenuliterewe_xewabipiwe.pdf
    • http://hommagenutrition.com/uploads/1/3/0/8/130874416/6423313.pdf
    • http://judithdesigns.net/uploads/1/3/0/9/130969341/72520ea1ca.pdf
    • http://genesisjewel.com/uploads/1/3/0/4/130483426/rigusib-wipivaka.pdf
    • http://dominiquedonna.com/uploads/1/3/1/3/131380495/3366851.pdf
    • http://homeartscontentandcopywriting.com/uploads/1/3/0/8/130814127/9102761.pdf
    • http://antoniacundy.com/uploads/1/3/1/3/131378970/niruwujomexuv.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_off00007b1f.bin
14d0785eb0b2b669e99cde973cb5e649a974b3e3b56d9afe651b7d99bc0ca848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1F 9152 bytes
font_01_sfnt_off00009ddd.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DDD 1708 bytes

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