Malicious PDF — malware analysis report

Static analysis result for SHA-256 9868abdef870a900…

MALICIOUS

PDF

44.9 KB Created: 2020-04-04 09:06:48 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 99e2617d190479025da369ea624bb194 SHA-1: 2b0317d6da8506a4bfb4a3de6c066865c8476f8c SHA-256: 9868abdef870a90068a0a4492e745d75f4d0f27046366e4a9d524a7d87c3865e
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are structured as SEO gateway links, indicating a link farm designed to distribute malicious content. The document body, though partially corrupted, suggests a lure related to an 'answer key', which is a common tactic for phishing or malware delivery. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious link farm.

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://tcm-consulting.net/uploads/1/3/0/3/130379243/130379243.html#math+kangaroo+2013+answer+key
    • http://huertorriqueno.com/uploads/1/3/1/4/131437871/dinuwirim_lagusopuz.pdf
    • http://inovarservicosintegrados.com/uploads/1/3/1/3/131380343/sirazarijajexulimeba.pdf
    • http://designinglifestylesbycorinne.net/uploads/1/3/1/3/131398561/f628e40f5dc481.pdf
    • http://mollymia.com/uploads/1/3/0/2/130272483/6117459.pdf
    • http://callian.com/uploads/1/3/0/4/130476076/3e4d082.pdf
    • http://eyjavarp.is/uploads/1/3/0/6/130621683/7820963.pdf
    • http://easton-pa-justice-attorneys.com/uploads/1/3/1/3/131383650/pumomako.pdf
    • http://manebraid.com/uploads/1/3/0/8/130813668/zisolafurete.pdf
    • http://crablefoundation.org/uploads/1/3/1/3/131380063/badexonuwuvefe-dawiniwuze.pdf
    • http://galgositalianos.com/uploads/1/3/0/5/130590384/gubaluwasunelo.pdf
    • http://garagedawgtraining.com/uploads/1/3/0/6/130620869/kotavewupare_pevokonafavibar_jekoboxu_vofimuxuxujine.pdf
    • http://jessupart.com/uploads/1/3/0/4/130490833/xojatopudijonuruxi.pdf
    • http://evenbetteronlinecom.com/uploads/1/3/0/4/130483989/kusexo-subijakuzuje-wametinekegox-rabogufizusiz.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_off00007817.bin
e85d7450b55319a34441d759b4349bf0a4e03b88b274f6b9282ac8c4b9631d25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7817 9580 bytes
font_01_sfnt_off00009b26.bin
8cdd16da45892b6090bf5066e041d2515dcf3049712e3d1ed0406489b7f60b3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B26 3184 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.