Malicious PDF — malware analysis report

Static analysis result for SHA-256 a717873b11bbcd86…

MALICIOUS

PDF

37.8 KB Created: 2020-05-15 06:59:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a980237b23bdc0f78c3c17dacf57a347 SHA-1: 80d969cda983188281a21516ec652c33295c9106 SHA-256: a717873b11bbcd86e00179db6800b9ab71ace25a57b995d45ea837a35343ae3d
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically or generically named PDF files hosted on various domains. The document body mentions 'Coin master cheats for android', suggesting a lure to attract users to click on these links. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to host malicious content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://victoriasaesthetics.net/uploads/1/3/0/2/130270897/130270897.html#coin+master+cheats+for+android
    • http://tslapplications.com/uploads/1/3/0/6/130603925/5644780.pdf
    • http://nourishhealthservices.com/uploads/1/3/1/4/131437655/wonunazexiv.pdf
    • http://blondiesboutiqueofava.com/uploads/1/3/1/6/131606009/tijexexojesisoj-xevule.pdf
    • http://effectivechangemanagement.net/uploads/1/3/1/8/131856129/7422775.pdf
    • http://silverbirchhomestead.com/uploads/1/3/0/6/130640004/rapilumeme.pdf
    • http://lamaintendue.net/uploads/1/3/0/5/130589420/9952231.pdf
    • http://htxheli.com/uploads/1/3/0/7/130740123/lonuti.pdf
    • http://motorcityracing.shop/uploads/1/3/0/3/130379336/gowunaxes_zekot_didabidokepeg_lutunuxinari.pdf
    • http://boostmybalance.com/uploads/1/3/0/7/130739124/defa0cf.pdf
    • http://allparts.ch/uploads/1/3/0/3/130324050/xorabe.pdf
    • http://northstarconcretema.com/uploads/1/3/0/9/130969991/nerulifil.pdf
    • http://theclatfordarms.com/uploads/1/3/0/5/130539315/gisapa.pdf
    • http://515822216727963358.com/uploads/1/3/0/7/130775228/49039fdd7c705e.pdf
    • http://wesous.com/uploads/1/3/0/5/130590261/mixixam_rodigeme.pdf
    • http://infinityhealingcenter.com/uploads/1/3/0/7/130740011/38c654.pdf
    • http://megs.studio/uploads/1/3/0/4/130435978/kabadumaregu-vovemuwi.pdf
    • http://galandscapellc.com/uploads/1/3/0/4/130476804/7540834.pdf
    • http://lizdowneyartist.com/uploads/1/3/0/3/130379676/8658151.pdf
    • http://godofdreams.com/uploads/1/3/0/2/130287504/larexa.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067a1.bin
e0bbda831874e931c1e9526f67255720df153a6b69d6874bce7586e3735c4631		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67A1 10520 bytes

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