Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6e15d83b626b9b1…

MALICIOUS

PDF

43.4 KB Created: 2020-03-12 03:01:40 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ad2297bb0901c2b113c7f0068cd24f8e SHA-1: 87deaacba0356c54c57abb31bf0a8a382f84c96c SHA-256: b6e15d83b626b9b1b0f66764953825617c254867b7cfc133edccfe491b010e5f
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, as detected by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a distribution mechanism for further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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
  • 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://mccorkleagsales.com/uploads/1/3/0/2/130270989/130270989.html#past+perfect+continuous+vs+present+perfect+continuous+exercises+pdf
    • http://royalvacation.online/uploads/1/3/0/4/130476263/7863984.pdf
    • http://www.ecfix.net/uploads/1/3/0/2/130288768/woraje-timut-xemagoluteje-rekewivo.pdf
    • http://onlinebuyonestop.com/uploads/1/3/0/2/130291355/e441990ff9.pdf
    • http://phoneserver.phillipsburgems.org/uploads/1/3/0/2/130289479/6432154.pdf
    • http://makemoneywithyahshua.com/uploads/1/3/0/6/130604321/wodiwozepi_soxatabilod_jiwof_kiwuvapud.pdf
    • http://en.brima.bg/uploads/1/3/0/4/130489377/lugika_wogukikuwinete_zixiwovupuregov_limuzizotobami.pdf
    • http://massagetherapistsacramento.com/uploads/1/3/0/2/130289803/ziwararemopogego.pdf
    • http://mygraphicdesignteam.com/uploads/1/3/0/4/130489926/sasesepiz.pdf
    • http://scrambledtosunnysideup.com/uploads/1/3/0/7/130775929/87518.pdf
    • http://birdbangers.com/uploads/1/3/0/5/130590305/6222485.pdf
    • http://cp-tools.com/uploads/1/3/0/4/130475892/nugineriwulewi.pdf
    • http://cantonfair2u.com/uploads/1/3/0/5/130551794/d98571249f67.pdf
    • http://thecircleseven.com/uploads/1/3/0/4/130483772/9576514.pdf
    • http://www.geekandfind.com/uploads/1/3/0/4/130488328/xuwoxifuw_naginikerovigo_juwirarofon.pdf
    • http://www.quesak.com/uploads/1/3/0/6/130603807/xemedurikojikow.pdf
    • http://argentshadow.com/uploads/1/3/0/5/130540172/magiditeximuvaveze.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b7a.bin
028f1b0d7ba7fec3631b700a72560d9676e67f9605f09705217ad0d851df71b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7A 7776 bytes
font_01_sfnt_off00008a05.bin
0f23141ba94d37b49c53016ac63a9b008a6ac8e4c4656a8d80e6725f77750189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A05 16140 bytes

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