Malicious PDF — malware analysis report

Static analysis result for SHA-256 95add395f5b36449…

MALICIOUS

PDF

37.5 KB Created: 2020-03-29 07:32:29 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: af43eeadb433b337b715f480f800179a SHA-1: 7c8ae6b9bb29b8d2755ace35ba5d91f976a41c41 SHA-256: 95add395f5b364493876dd97635fe436e4c491d16e33e46b229a2aa7726ff85c
92 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The embedded URLs point to various domains, suggesting a link farm or redirection network. The document body, though partially corrupted, contains the phrase 'Ser and estar practice worksheets' and references wkhtmltopdf, indicating it was likely generated programmatically to appear as a document. The primary function appears to be directing users to a network of external sites.

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://promakeupartist.online/uploads/1/3/0/7/130776561/130776561.html#ser+and+estar+practice+worksheets
    • http://derpdaily.com/uploads/1/3/0/5/130589385/pisojixurefinalumi.pdf
    • http://ravaflav.com/uploads/1/3/0/5/130590431/sajin.pdf
    • http://mlstourney.com/uploads/1/3/0/6/130605152/4837896.pdf
    • http://collegestationtowing.com/uploads/1/3/0/5/130540134/luwumukupi.pdf
    • http://techtator.org/uploads/1/3/0/4/130490218/7006569.pdf
    • http://patrickocal.org/uploads/1/3/0/2/130287845/leviwemojeribuv.pdf
    • http://ajwellsolutions.com/uploads/1/3/0/7/130775766/jotosuvilar.pdf
    • http://sdksoftware.com/uploads/1/3/0/2/130272477/gipejox_getogozusanoza_bapilegivo_reluxekopeke.pdf
    • http://taipei-hight-club.com/uploads/1/3/0/6/130621344/kaxag_daxaluvurem_bilisozigokuke_dukirapafon.pdf
    • http://austineftcommunity.org/uploads/1/3/0/9/130969806/fasuki.pdf
    • http://thecranberrystore.com/uploads/1/3/0/6/130605153/6bceb.pdf
    • http://thehindireads.com/uploads/1/3/0/5/130543764/wuxikepusakebut-wujajufolebok-wonavonilig.pdf
    • http://onecampus.live/uploads/1/3/0/2/130287419/mebiseg_datir.pdf
    • http://thecraftroomomaha.com/uploads/1/3/0/2/130287542/nokuwuno.pdf
    • http://kristaatkinson.com/uploads/1/3/0/4/130476598/4812110.pdf
    • http://fountaincityinv.com/uploads/1/3/0/5/130589100/zenobanusaxove.pdf
    • http://prestige2luxurytravel.com/uploads/1/3/0/7/130775111/966466ab.pdf
    • http://uniqueravelife.com/uploads/1/3/0/6/130621077/xagudoxezu.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_off0000664f.bin
20963cc1cffeb7ed43de6a8fb9dbfe83256a1114d25c24ddbe908fe803085673		 pdf-font-stream PDF embedded font (sfnt) at offset 0x664F 8536 bytes

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