Malicious PDF — malware analysis report

Static analysis result for SHA-256 606f7d722d73af0b…

MALICIOUS

PDF

48.8 KB Created: 2020-03-07 17:07:33 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e5bafcff27160d6704bdcdf24e0fca51 SHA-1: d67e89f0b724e40b0e79c1d3961984c4e5ea0445 SHA-256: 606f7d722d73af0b668310604210a30b698a76d2d13e073cba2b9de50577fde1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains a URL that matches one of the extracted links. This suggests the primary purpose is to direct users to a network of linked pages, likely for SEO manipulation or to host further malicious content.

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://9mgr4.bpmtc.com/uploads/1/3/0/4/130483550/130483550.html#airtel+dth+packages+channel+list+with+price+in+chennai
    • http://bokugroup.com/uploads/1/3/0/2/130287291/8992058.pdf
    • http://illitrehitim.com/uploads/1/3/0/5/130588475/sogozu-lemifiwemumiva.pdf
    • http://ooredookuwait.net/uploads/1/3/0/6/130639413/9711843.pdf
    • http://bonniesthlm.com/uploads/1/3/0/4/130488662/f3e8a5cc4a4825.pdf
    • http://www.hustleheelsandlips.com/uploads/1/3/0/3/130313383/mokuxekawidigifedidu.pdf
    • http://anconaconsulting.com/uploads/1/3/0/8/130874563/673ddfd345ffa03.pdf
    • http://zdocj.bpmtc.com/uploads/1/3/0/5/130551675/a53738f5043.pdf
    • http://sidemountainspecialtyfoods.com/uploads/1/3/0/2/130288341/vesawusukigatin_nowol_sulitekuj_rorupebimo.pdf
    • http://floresfamilychildcare.net/uploads/1/3/0/8/130813770/4424042.pdf
    • http://www.scattrbraind.com/uploads/1/3/0/3/130379430/kubasaxujatetem.pdf
    • http://rosslandry.com/uploads/1/3/0/2/130271229/3ae58.pdf
    • http://hostmaster.joejuneandmae.de/uploads/1/3/0/8/130815017/miroj.pdf
    • http://hostmaster.reisebuero-flemming.de/uploads/1/3/0/9/130969335/1659980.pdf
    • http://303stonebrokers.com/uploads/1/3/0/6/130640223/kobizofipepusexok.pdf
    • http://handymancu.com/uploads/1/3/0/6/130605447/d6d90ed983d4.pdf
    • http://fwaltondumas.com/uploads/1/3/0/6/130605292/d92e30c103219.pdf
    • http://ccorvidae.com/uploads/1/3/0/5/130550781/fomekizatugan-jilejasojipa-govin-gurutazulit.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000948d.bin
4c28750c160b8ff6e08854a3d0635eaf2d05eec0fc0a6e33135cbf5b0034839a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x948D 8080 bytes

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