Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0e44c1226fef086…

MALICIOUS

PDF

416.4 KB Created: 2022-06-05 12:01:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: ead1010d51508b6ea1834482a29409c0 SHA-1: bcd282c271b06b0a9eed920aedf6ffc523771996 SHA-256: e0e44c1226fef08625e36afdd8f183adc23083d59c9b67c487383b4e86d3ab00
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a signature indicating it is a phishing trojan. It contains numerous embedded URLs, with one specifically pointing to a URL that appears to be a lure for a 'phr+study+guide+2017+printable+free+pdf+file'. The PDF structure also shows duplicate object bodies, which can be used to obfuscate malicious content. No scripts were extracted, but the presence of multiple external URIs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4036

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://yubit.co.za/XSRYdR1H?utm_term=phr+study+guide+2017+printable+free+pdf+file PDF link annotation
    • https://rais.bg/uploads/file/71859888530.pdfIn PDF document text
    • https://seranogi.weebly.com/uploads/1/3/4/2/134265977/gidojimigovivinawiz.pdfIn PDF document text
    • http://roberlo.cz/www/files/file/80695665330.pdfIn PDF document text
    • https://zovazasadurog.weebly.com/uploads/1/4/1/7/141723808/42330e.pdfIn PDF document text
    • https://pedagojewixa.weebly.com/uploads/1/3/1/3/131398360/vituwekilositij.pdfIn PDF document text
    • https://lulefimoka.weebly.com/uploads/1/3/2/7/132740328/mirumafukolenuf.pdfIn PDF document text
    • https://jesetediramu.weebly.com/uploads/1/4/1/2/141260372/3004814.pdfIn PDF document text
    • https://fovezifume.weebly.com/uploads/1/3/0/8/130874198/51419.pdfIn PDF document text
    • https://koberowebajufom.weebly.com/uploads/1/3/4/0/134096943/tilewuzutewirepe.pdfIn PDF document text
    • http://mlgholding.hu/admin/kcfinder/upload/files/78617711659.pdfIn PDF document text
    • https://xabejopoturidu.weebly.com/uploads/1/3/4/3/134352457/3e7878fde5.pdfIn PDF document text
    • https://vumeganutubaxo.weebly.com/uploads/1/3/1/4/131406578/c6dbf91449263f.pdfIn PDF document text
    • https://pegizelovuzedo.weebly.com/uploads/1/4/1/3/141306082/wenejatemegokisujexa.pdfIn PDF document text
    • http://wayoflife.hu/userfiles/file/96125365525.pdfIn PDF document text
    • https://exxel.cz/kcfinder/upload/files/89446390853.pdfIn PDF document text
    • https://faruraponowol.weebly.com/uploads/1/3/5/3/135311790/mileduba_kegozotoleloma_gudolexub_linefa.pdfIn PDF document text
    • https://lobizuwoxigamog.weebly.com/uploads/1/3/4/5/134515373/4267370.pdfIn PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/6560089.pdfIn PDF document text
    • https://tonewebebajuja.weebly.com/uploads/1/3/5/3/135319275/6629004.pdfIn PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/5513b.pdfIn PDF document text
    • https://nugumogixowujo.weebly.com/uploads/1/3/1/4/131437940/1775720.pdfIn PDF document text
    • https://rupekiduwixe.weebly.com/uploads/1/3/4/7/134774185/kukapilukesazanawu.pdfIn PDF document text
    • https://mazidumusud.weebly.com/uploads/1/3/4/6/134680178/02c716a3a1c.pdfIn PDF document text
    • https://fanamavikere.weebly.com/uploads/1/3/4/6/134610997/jiluruno.pdfIn PDF document text
    • https://gorasamigizutod.weebly.com/uploads/1/3/4/6/134600185/7357624.pdfIn PDF document text
    • https://bursaphotofest.org/uploads/files/negebaxujuwomamadof.pdfIn PDF document text
    • http://penzion.sarmo.cz/Images/file/21998890599.pdfIn PDF document text
    • https://xutawolovunoka.weebly.com/uploads/1/3/0/7/130739399/nugomivosamar.pdfIn PDF document text
    • https://jopidebo.weebly.com/uploads/1/3/4/6/134608850/f5f3a.pdfIn PDF document text
    • https://xudowupibanes.weebly.com/uploads/1/4/1/3/141364717/9028434.pdfIn PDF document text
    • https://bozudikejud.weebly.com/uploads/1/3/4/5/134519676/romaz-kixokosapane-zagog.pdfIn PDF document text
    • https://actionsporting.com/userfiles/files/14046086659.pdfIn PDF document text
    • https://melogeliwo.weebly.com/uploads/1/4/1/5/141596825/fc511d47.pdfIn PDF document text
    • https://divinehm.com/ckeditor/kcfinder/upload/files/90207527385.pdfIn PDF document text
    • https://damuririxag.weebly.com/uploads/1/4/1/7/141770921/3490415.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/3a0731ce1788d802ceff7df349bd9a21/47764899974.pdfIn PDF document text
    • https://pejunujatajobu.weebly.com/uploads/1/3/5/9/135973135/vojidofujiba.pdfIn PDF document text
    • https://aurorahoian.com/app/webroot/upload/files/115802551.pdfIn PDF document text
    • https://jimutibif.weebly.com/uploads/1/4/1/8/141864544/tolukab-wafozase-kavatinotoji.pdfIn PDF document text
    • https://satijezusadevu.weebly.com/uploads/1/3/4/3/134310115/manig_xunurasig_papel_vobiramomivonu.pdfIn PDF document text
    • https://sonoredepi.weebly.com/uploads/1/3/0/9/130969061/kunezogatijuzob-xosale-pepazumeni-busisazine.pdfIn PDF document text
    • https://pekesasopalono.weebly.com/uploads/1/3/4/5/134505129/a208a66.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    +1 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00060567.bin
d1730cb5477cbf6f73474ed457ca316b8eb297103f443cab66c995dbb460c984		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60567 20648 bytes
font_01_sfnt_off00063c51.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C51 16792 bytes
font_02_sfnt_off0006546e.bin
6ed83895f7fe03ad8d7d69f22b97d9a6593fbac322821eb4981b6797be13cab8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6546E 11356 bytes

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