Malicious PDF — malware analysis report

Static analysis result for SHA-256 0df09d17a4c9d7f5…

MALICIOUS

PDF

44.9 KB Created: 2020-03-21 13:45:53 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4c930ba04041638c9e56bea0c1917cc7 SHA-1: 03552f9e8ed0e638dc47aa5e51eb9e5544a59ca8 SHA-256: 0df09d17a4c9d7f57ab3e27e8b4ad11540ad30d0f3f762f2d3a9ec5d01457e34
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness, and the PDF structure suggests an attempt to create a link farm. No scripts were extracted, but the presence of numerous URLs points towards a phishing or content-luring attack vector.

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://sharetosaveamerica.com/uploads/1/3/0/7/130739381/130739381.html#restatement+%28second%29+of+torts+%C2%A7+339
    • http://www.destinyly.com/uploads/1/3/0/3/130313557/dagipekusutijof.pdf
    • http://www.e-m-services.com/uploads/1/3/0/6/130605118/medudewalojerot.pdf
    • http://carpenter-lomax.com/uploads/1/3/0/4/130490117/71b9025a510019.pdf
    • http://jessicaadnani.com/uploads/1/3/0/6/130639978/rapekipupi.pdf
    • http://uxsos.com/uploads/1/3/0/4/130476766/xoledubeva-dutudewazuxewed.pdf
    • http://pocketshows.com/uploads/1/3/0/5/130589281/a43f7.pdf
    • http://popculturecon.org/uploads/1/3/0/3/130313190/jopapetogisito-toxoka-poteveraz.pdf
    • http://www.ignitingliveshomecare.com/uploads/1/3/0/7/130776667/23c81563f.pdf
    • http://managingsports.com/uploads/1/3/0/7/130738805/4551220.pdf
    • http://kenko-samunpai.com/uploads/1/3/0/7/130776168/seluxu.pdf
    • http://kheeterwgu.com/uploads/1/3/0/8/130814645/7157741.pdf
    • http://sophiesticated-travelstories.com/uploads/1/3/0/8/130873732/5187744.pdf
    • http://rxtherapeuticmassage.com/uploads/1/3/0/6/130621193/nepifepot-gaguru-zevifi-fowopodigas.pdf
    • http://luczakw.com/uploads/1/3/0/4/130488401/4304617.pdf
    • http://micheleyoung.net/uploads/1/3/0/7/130775834/1132352.pdf
    • http://brehmpainting.com/uploads/1/3/0/7/130739712/kedubewilukomu.pdf
    • http://ucmchurch.com/uploads/1/3/0/6/130639477/polufo.pdf
    • http://seniorsservicesfloorsinc.net/uploads/1/3/0/4/130476310/dujiguv-dimorad.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_off00008516.bin
0fd645af34792507377b1f4b0a52602d7cfa06082d1b02660c157a7a962d8472		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8516 8052 bytes

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