Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf02d206ade64fc…

MALICIOUS

PDF

46.4 KB Created: 2020-05-05 01:02:02 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f149c6f16268175d0e5609132dd3c7cd SHA-1: 11f95a945954fb6f06437cbae08012cfd8bbe921 SHA-256: eaf02d206ade64fc17980126735b7fc683b268dcf04720e3dc2cc0267d5d8b65
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of specific user-facing lures.

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://outdoorssouthwest.com/uploads/1/3/0/6/130620650/130620650.html#vector+canape+user+manual
    • http://jeanniewarnke.com/uploads/1/3/1/0/131070168/gigimalela.pdf
    • http://betterscope.org/uploads/1/3/0/5/130539348/letefetojodeku.pdf
    • http://jadinesskintribe.com/uploads/1/3/1/4/131407974/zazuxitizomaza_tovobo_jekitujuwedoted.pdf
    • http://innatelivingchiro.com/uploads/1/3/0/7/130740110/ziwakekobegis.pdf
    • http://aftercareusa.studio/uploads/1/3/0/5/130590321/bukenekote.pdf
    • http://northwoodslabradors.com/uploads/1/3/1/1/131163898/setozubuxisefe_xojesus_zusasusanunev_jagaroruvolur.pdf
    • http://720realestate.net/uploads/1/3/1/4/131407010/235725.pdf
    • http://chasworldhearts.com/uploads/1/3/1/4/131482884/dujekos.pdf
    • http://thesispro.org/uploads/1/3/0/5/130539054/vuxovulinuvoziziwoj.pdf
    • http://nicandannie.com/uploads/1/3/0/5/130551256/xasipobevik.pdf
    • http://violetcrownkids.com/uploads/1/3/1/3/131383305/kitulokupifur-fisuzedab-timisisizu.pdf
    • http://grisorojewelry.com/uploads/1/3/1/4/131482812/rugerovo-runabafidi-gezelu.pdf
    • http://ez-pz-pay.com/uploads/1/3/0/6/130604176/purifa_wizekolale.pdf
    • http://northcoastrealtypnw.com/uploads/1/3/1/6/131636956/wamufi.pdf
    • http://aliabdelmohsen.com/uploads/1/3/1/4/131455475/dabow.pdf
    • http://mazzy.co/uploads/1/3/0/9/130969214/9048153.pdf
    • http://shanthiscollection.clothing/uploads/1/3/0/6/130605071/aee0f.pdf
    • http://mlvehiclemaintenance.com/uploads/1/3/0/6/130621015/kumolatulado.pdf
    • http://alahadtrade.com/uploads/1/3/1/4/131407815/xoletum.pdf
    • http://cubemama.shop/uploads/1/3/1/4/131437484/e254d866.pdf
    • http://redhead98.org/uploads/1/3/0/7/130739828/faterureviwojadelud.pdf
    • http://superunderdoggie.com/uploads/1/3/0/9/130969141/77d38c3b4bacd.pdf
    • http://nadlan-haarris.com/uploads/1/3/0/7/130739225/898e3007bf0d7.pdf
    • http://janelleharris.com/uploads/1/3/0/6/130621503/vaferazovokizoxoz.pdf
    • http://marathondegliaragonesi.com/uploads/1/3/0/5/130589191/vezezux.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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_off000086fc.bin
f00b27408a5e7de3af9a0bfcf418c9ed936d38b13ea9da6cafde2e185cde1cdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86FC 11556 bytes

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