Malicious PDF — malware analysis report

Static analysis result for SHA-256 f065e6e4addcd56c…

MALICIOUS

PDF

58.7 KB Created: 2020-03-11 04:08:12 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: a88cc1f4fb9404e20267e5cc600dab82 SHA-1: 5aed0df420271d7591a57090c93e2740156fa2f6 SHA-256: f065e6e4addcd56cebd07e4eee469091b8c0d12de72464461f5205f0472a58e8
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files on different domains. This technique is often used for SEO spam or to distribute malicious content. The ML classifier strongly indicated maliciousness. No scripts were extracted, limiting the ability to determine the exact payload or persistence mechanisms.

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://bardosteamcolorado.bardosdiamondsports.com/uploads/1/3/0/8/130874386/130874386.html#class+10+date+sheet+2019+up+board+pakistan PDF link annotation
    • http://bodybarn.net/uploads/1/3/0/3/130323567/a953e517f.pdfIn PDF document text
    • http://oldmexico.info/uploads/1/3/0/2/130289702/0e8d0d43a70dfa.pdfIn PDF document text
    • http://paigewalton.com/uploads/1/3/0/7/130740563/1445477.pdfIn PDF document text
    • http://crystalcoldrentals.com/uploads/1/3/0/2/130272396/zafetodikumo.pdfIn PDF document text
    • http://www.northern-carbon.com/uploads/1/3/0/7/130740193/17194.pdfIn PDF document text
    • http://unitedweresist.org/uploads/1/3/0/4/130476743/tonuf.pdfIn PDF document text
    • http://mrgunworks.com/uploads/1/3/0/5/130551153/9900630.pdfIn PDF document text
    • http://rafterpack.com/uploads/1/3/0/8/130814408/binigarovof.pdfIn PDF document text
    • http://publicationorganizer.com/uploads/1/3/0/9/130969808/rotekaguda-gidub-keseniduloze-nanewadidabo.pdfIn PDF document text
    • http://swindonotpartnershipofchurches.org/uploads/1/3/0/5/130590778/soxage-jevak-werumukubefolak-jatebedara.pdfIn PDF document text
    • http://mta-sts.mx.loriprecious.com/uploads/1/3/0/7/130775063/1597600.pdfIn PDF document text
    • http://andmerchant.net/uploads/1/3/0/7/130776590/662186.pdfIn PDF document text
    • http://webseo.studio/uploads/1/3/0/5/130589115/e5497bd214.pdfIn PDF document text
    • http://myelizabethsanchez.com/uploads/1/3/0/2/130291555/mibili_wiwapo_zusatononigu_wuzepawonik.pdfIn PDF document text
    • http://viceroyautotrans.com/uploads/1/3/0/2/130271015/1528866.pdfIn PDF document text
    • http://ybear.org/uploads/1/3/0/4/130483629/9bae6ce995883e.pdfIn PDF document text
    • http://fcjt-diel.nl/uploads/1/3/0/6/130605030/c6e173b1b2.pdfIn PDF document text
    • http://mail.simonshotdogs.com/uploads/1/3/0/6/130604638/6e7f8d621de.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000098eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98EB 7432 bytes
SHA-256: d225036bdc5dc0df8be9adfc7e3b7425754bce77f6339865a09d7be2501f891e
font_01_sfnt_off0000b5fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5FE 13732 bytes
SHA-256: 706ab8b08624b1a47b5f2c3ae34bdcc6d86083fb2f52ad4bfd4bd5effaea733b

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