Malicious PDF — malware analysis report

Static analysis result for SHA-256 184ef8386f39ca45…

MALICIOUS

PDF

40.3 KB Created: 2020-05-23 05:25:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92ab8dc8a545180fc799999d36c6b58a SHA-1: f2db50289cfdfe405e31fbe7ab0acd99b596f1d6 SHA-256: 184ef8386f39ca45ea933334923648fc3e2309823ab863c45eb636f5591f6408
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to host malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically indicates this behavior, suggesting the document's primary purpose is to redirect users to a network of linked sites. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests that the document may also be intended to trick users into providing passwords for encrypted archives, a common tactic to bypass security filters.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ultralateral.ca/uploads/1/3/0/6/130640223/130640223.html#david+viscott+a+linguagem+dos+sentim
    • http://hostmaster.thewoolproject.com/uploads/1/3/0/7/130775247/124e191edb8.pdf
    • http://callumsstag.com/uploads/1/3/0/2/130272921/7240043.pdf
    • http://divinehealinghands.studio/uploads/1/3/0/2/130287923/5886138.pdf
    • http://thebeautyboxguiseley.com/uploads/1/3/0/7/130775729/6153680ea2da.pdf
    • http://ttrgi.org/uploads/1/3/0/3/130313411/ludusedexafe.pdf
    • http://lakbay2020.com/uploads/1/3/0/3/130379777/kovulazesune_lojubakusur_zefejexuk.pdf
    • http://allisemy.com/uploads/1/3/1/4/131455024/rurafu_nefotubidako_fevakepulum_zesivarimina.pdf
    • http://urgenticaretexas.com/uploads/1/3/0/4/130489275/domugu-tunexonavafenif-veguselixepa.pdf
    • http://patriotnrr.com/uploads/1/3/0/7/130775116/zolof.pdf
    • http://geointerio.com/uploads/1/3/1/4/131453934/koguz_rumeko.pdf
    • http://uneedem.com/uploads/1/3/0/7/130775729/lubijagu.pdf
    • http://tentenbus.net/uploads/1/3/0/8/130813957/c5e971d38c43.pdf
    • http://nsolc.com/uploads/1/3/0/6/130604264/3643799.pdf
    • http://627.heathermcclarriephotography.com/uploads/1/3/1/0/131070165/belufuxemefe_polisonolemek.pdf
    • http://ahlincattle.com/uploads/1/3/0/8/130815115/4590173.pdf
    • http://50klawn.net/uploads/1/3/0/6/130639263/kojofosiva.pdf
    • http://aminomassage.com/uploads/1/3/1/3/131381046/86cda247e51da.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c8e.bin
c3c5f15eb00bc9876b8e46c8275fcb4055bb60588e256cfd2e6e81a00ec1c8ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8E 12704 bytes

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