Malicious PDF — malware analysis report

Static analysis result for SHA-256 6028762cf77ea9d6…

MALICIOUS

PDF

44.4 KB Created: 2020-03-18 08:58:52 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6fb13f036d69f35338c1a7be10990793 SHA-1: 9ad14e416e9ccd9bbeb13e3eee8b36cf973662d7 SHA-256: 6028762cf77ea9d6d99892bdc445c9a619a14106892b7dd902f0789303550317
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The primary URL, http://rekazconsult.com/uploads/1/3/0/5/130543063/130543063.html#autodesk+fusion+360+black+book+review, suggests a lure related to a book review. The presence of numerous links to PDF files on different domains indicates a coordinated effort to distribute content or potentially host malicious payloads, aligning with Ingress Tool Transfer.

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://rekazconsult.com/uploads/1/3/0/5/130543063/130543063.html#autodesk+fusion+360+black+book+review
    • http://mostatedm.com/uploads/1/3/0/3/130313024/23e75751a.pdf
    • http://sidequestexpo.com/uploads/1/3/0/6/130603943/f6cdc0b4e.pdf
    • http://conjectp.net/uploads/1/3/0/3/130323513/vawigud_sezibapiseliva_wulodoxibu_kejexewefiwuxow.pdf
    • http://www.fidesrepunte.us/uploads/1/3/0/7/130738684/2013197.pdf
    • http://globalcrosslinker.com/uploads/1/3/0/5/130551063/jikigi.pdf
    • http://caresdl.com/uploads/1/3/0/4/130436028/5195808.pdf
    • http://ac-collaborative.com/uploads/1/3/0/2/130289736/5ad16e3acf86.pdf
    • http://carminarevert.xyz/uploads/1/3/0/7/130738948/e7481e342d698e.pdf
    • http://www.bkwathletichalloffamenet.net/uploads/1/3/0/8/130813144/zirogetajixevuruw.pdf
    • http://justicecollaborativeatcornell.com/uploads/1/3/0/3/130323301/fakabimizikubo-worawi-tiwapenusipud.pdf
    • http://www.leaseoptionalbuquerque.com/uploads/1/3/0/5/130551925/4568554.pdf
    • http://meadvindental.com/uploads/1/3/0/5/130543468/lenomaxati.pdf
    • http://jilliananderic.com/uploads/1/3/0/5/130588360/kaveworafokolonufemi.pdf
    • http://minerhosting.at/uploads/1/3/0/7/130775294/xozamex-jekex-zozemiwila.pdf
    • http://mx.etcknittingstudio.net/uploads/1/3/0/6/130604313/xubolewowuvoputa.pdf
    • http://hostmaster.sheilamymum.co.uk/uploads/1/3/0/7/130775959/gubolatupo.pdf
    • http://notaryofnh.com/uploads/1/3/0/2/130289676/lukubudozop-navujexorixa-tarew.pdf
    • http://minnesotalashextensions.com/uploads/1/3/0/4/130435670/4726093.pdf
    • http://mta-sts.mx.lolswampfest.com/uploads/1/3/0/8/130874435/4ee7549f4caf25.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/
    • http://www.adobe.com/).Noto
    • http://www.google.com/get/noto/http://www.adobe.com/type/This
    • http://scripts.sil.org/OFLNoto

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f30.bin
7a00df05e1ac7f206f1a9a2dafcc5dac647819ebaa429d232be7601797f648b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F30 9212 bytes
font_01_sfnt_off00009107.bin
afd8868629b61d85ec32a8a0de1ca84da82d48156cdd7447d7c4f51403cf5149		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9107 5244 bytes

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