Malicious PDF — malware analysis report

Static analysis result for SHA-256 22861a7fa02469d6…

MALICIOUS

PDF

49.7 KB Created: 2020-05-19 08:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9aff31194e522ecebe7380df33059ac0 SHA-1: babd7db8443449276a9ce4a3f7f7a63ffa40cdcc SHA-256: 22861a7fa02469d6c8b84a0135034e2e6c58f7a27ab6fd633f7dcb93d20e5265
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains an embedded JavaScript stream and a large number of external links, many of which point to other PDF files on various domains. The document body, though heavily obfuscated, contains references to a book title and the wkhtmltopdf tool, suggesting a lure to external content. The embedded JavaScript and the link farm indicate an attempt to redirect the user to potentially malicious websites, likely for further exploitation or SEO spam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://desktoys.store/uploads/1/3/0/5/130540134/130540134.html#michel+foucault+surveiller+et+punir+pdf
    • http://panamericandebate.org/uploads/1/3/0/6/130604637/nesun.pdf
    • http://mikesmeatsnack.com/uploads/1/3/1/6/131636862/3cabffed2f50.pdf
    • http://charliemorrisey.org/uploads/1/3/1/3/131380399/temekagowi_susikonegibat_gigajorifakaje_mikelo.pdf
    • http://reiddoyle.com/uploads/1/3/0/6/130639943/307fcd.pdf
    • http://pawsandclawspetcare.net/uploads/1/3/1/3/131380420/5745070.pdf
    • http://unitedglobaltravel.net/uploads/1/3/0/6/130620492/tajobesi.pdf
    • http://lovesavesspace.com/uploads/1/3/0/5/130543976/zetukuvabopememugewe.pdf
    • http://broncobowlingbash.com/uploads/1/3/1/8/131856050/299b144.pdf
    • http://cbclifefinancial.com/uploads/1/3/0/7/130776626/suwisikizevagefozona.pdf
    • http://rwmannllc.com/uploads/1/3/0/4/130435737/tujunexubuxami.pdf
    • http://israelarmsllc.org/uploads/1/3/0/3/130323936/bifirefesipozader.pdf
    • http://frenchtoursbylocals.com/uploads/1/3/0/6/130621179/63c71f198.pdf
    • http://arjaymurray.com/uploads/1/3/0/6/130604289/dbe748bf91b22ad.pdf
    • http://tfproductions.org/uploads/1/3/0/6/130620929/pefasazegawew.pdf
    • http://renttorent.academy/uploads/1/3/1/6/131637226/9192904f5e.pdf
    • http://flintassociates.net/uploads/1/3/0/7/130738885/c1e60.pdf
    • http://ninaceledonio.com/uploads/1/3/1/4/131453387/9697329.pdf
    • http://towing54.com/uploads/1/3/0/2/130272086/nazib_razowos.pdf
    • http://fayretradeuk.com/uploads/1/3/1/4/131408245/64b715.pdf
    • http://wilkesbarrebouncehouse.com/uploads/1/3/0/5/130538869/fugakakenetix.pdf
    • http://adsforpts.com/uploads/1/3/0/6/130604222/vajujiko.pdf
    • http://draquaticcenter.com/uploads/1/3/0/8/130813650/ganaguxufekamuv.pdf
    • http://tmznews.org/uploads/1/3/1/3/131384016/sokoxusadaniwirap.pdf
    • http://shine-bright-futures.com/uploads/1/3/0/5/130550986/kimufokavisu.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_off000095da.bin
d773a4d4de328b69471fc29a21347bfcc13316528c233e6176d8a28bdbc27140		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95DA 10736 bytes

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