Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e00152d1ee63804…

MALICIOUS

PDF

77.9 KB Created: 2022-06-06 09:01:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 9873ccd9ae8866b294c69eb904be6550 SHA-1: 9b439e86f9ab39c5756e58ec98be83d268dc29e1 SHA-256: 9e00152d1ee638044ccfdb541b39ab067a41ca6c87f42eaac2c1427a77f27fdb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm with numerous external URLs. One prominent URL, https://tevav.co.za/YmrXLWy8, is directly embedded and likely serves as the primary lure. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, suggesting a broad attempt to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 5

  • 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.
  • 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://tevav.co.za/YmrXLWy8?keyword=weider%208525%20workout%20chart%20images%20%20pdf
    • https://mojivamupexudim.weebly.com/uploads/1/4/1/5/141591673/10b57608aff.pdf
    • https://duzemefoveraro.weebly.com/uploads/1/3/3/9/133997208/fijare.pdf
    • https://xepiketa.weebly.com/uploads/1/4/1/5/141558231/8361516.pdf
    • https://gokulibom.weebly.com/uploads/1/3/4/2/134266198/tezalavewenesi.pdf
    • https://pezofonarumupub.weebly.com/uploads/1/3/5/3/135396673/panafudevetub-vegunod-gitazovusipisij-totizur.pdf
    • https://mujonesaxofifi.weebly.com/uploads/1/3/4/6/134680030/fe025.pdf
    • https://kimuvigigu.weebly.com/uploads/1/4/1/5/141515458/pobapu.pdf
    • https://bifitulodagox.weebly.com/uploads/1/3/6/0/136081839/7c719a.pdf
    • https://vasoxalevevox.weebly.com/uploads/1/3/4/4/134477515/7cd44e96b5fa3.pdf
    • https://zepemotofilizag.weebly.com/uploads/1/3/5/3/135399015/senapigi.pdf
    • https://miraxinarenipu.weebly.com/uploads/1/3/5/9/135963033/4008456.pdf
    • https://rozinezo.weebly.com/uploads/1/3/1/6/131636990/punevekuniki-jerojiwa.pdf
    • https://gerorajowivorem.weebly.com/uploads/1/3/4/6/134686153/xobuzefup-nomozeloketit.pdf
    • https://pesadosopovito.weebly.com/uploads/1/3/4/2/134235692/dca1f4845c.pdf
    • https://zifizakidifivek.weebly.com/uploads/1/4/1/5/141564447/metuk_pipive.pdf
    • https://dejixaza.weebly.com/uploads/1/3/7/5/137516738/wuxivax.pdf
    • https://xokodozavujug.weebly.com/uploads/1/3/5/3/135343923/gabebetepulus.pdf
    • https://fopudodesesiwen.weebly.com/uploads/1/3/4/3/134344932/tilorase_pefixapa.pdf
    • https://lezafopiga.weebly.com/uploads/1/3/4/6/134628758/cd4a0de29681.pdf
    • https://zalajugimawif.weebly.com/uploads/1/3/0/7/130739284/15d3dddd.pdf
    • https://warexuzema.weebly.com/uploads/1/3/4/6/134601764/2341050.pdf
    • https://satisetuxa.weebly.com/uploads/1/3/0/8/130813646/3689712.pdf
    • https://bekarofadu.weebly.com/uploads/1/3/4/3/134346179/jebuvom-mumit.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/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c244.bin
7afe34efea5040247dbd5a05b4b65bddb00eb28acd7eabfd8c357af04c018953		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC244 18872 bytes
font_01_sfnt_off0000f42c.bin
abcb86cf055899b77b215a2744cfd801f75b8c75df712e2dec08da64ba5c43e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF42C 11648 bytes
font_02_sfnt_off00010fe9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FE9 16792 bytes

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