Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6cca00fd4b0c297…

MALICIOUS

PDF

75.9 KB Created: 2022-05-28 11:47:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: fde5787ccbc1de70a56b8d218db54510 SHA-1: d9795f73d256bdaca60b4e1f7c740536557dc6d6 SHA-256: c6cca00fd4b0c297773ab4e0b3efecbd0c2963c496c38f5040d2962c3a3bbf5d
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, with the primary one pointing to 'https://mifuj.co.za/YmrXLWy8?keyword=tooth%20fairy%20story%20pdf%20download%20pc%20game'. This suggests a link farm or phishing attempt designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://mifuj.co.za/YmrXLWy8?keyword=tooth%20fairy%20story%20pdf%20download%20pc%20game
    • https://lafozevu.weebly.com/uploads/1/3/4/3/134378288/a5705cc1d.pdf
    • http://duythuc-bearing.vn/uploads/userfiles/file/11775583471.pdf
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1625873b179445---nisugiragexe.pdf
    • https://gigelalezijim.weebly.com/uploads/1/4/1/4/141475487/xidekib-tabililipene.pdf
    • https://dubarepexax.weebly.com/uploads/1/3/4/5/134586846/2983089.pdf
    • http://landvest-usa.com/file_space/files/53174104004.pdf
    • https://zonotilikoper.weebly.com/uploads/1/3/1/0/131071062/lujepoda.pdf
    • https://koxalisibigemig.weebly.com/uploads/1/3/4/8/134854932/sunoxixibuxo.pdf
    • https://xopusinad.weebly.com/uploads/1/3/1/4/131406491/ruvapabasepenezakixe.pdf
    • https://jumolixebeze.weebly.com/uploads/1/3/4/3/134352805/5964105.pdf
    • https://nawijovom.weebly.com/uploads/1/4/1/3/141343679/efd18f85.pdf
    • https://xunedoworevesa.weebly.com/uploads/1/3/1/1/131164322/reravijukowitu.pdf
    • https://xusezazidajitov.weebly.com/uploads/1/3/5/3/135325201/bilofagi-vezin.pdf
    • http://maidichike.com/upload/files/12726266188.pdf
    • https://gazeta-msp.pl/user_files/File/tatamemov.pdf
    • http://viswinkelindex.nl/images/uploads/totusenewixajexelarezaxe.pdf
    • http://luxlustry.ru/img/upload/tasepikoboxapujiwupinofuk.pdf
    • http://stellamaris.cz/userfiles/sudamiriruzaxigozudomusez.pdf
    • https://rodokonodak.weebly.com/uploads/1/3/4/7/134730192/8490310.pdf
    • https://basisnomor.com/contents/files/90213572206.pdf
    • https://szemere-iskola.hu/images/files/fonakara.pdf
    • https://dosifavexi.weebly.com/uploads/1/4/1/3/141335886/xefaruzemu.pdf
    • https://labnewsasia.com/upload/files/76505272868.pdf
    • https://boluzevorekov.weebly.com/uploads/1/3/1/3/131384542/9073cbf8d8ba8fd.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_off0000c0c8.bin
53eac87152002a26a15b4688289b612fcef8fc202c798644c8853bf975b0f8db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0C8 11228 bytes
font_01_sfnt_off0000dad1.bin
46196e33227a4edbafe4692055ac373f96a096d708d1205d977d0181aa77f31b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD1 18000 bytes
font_02_sfnt_off00010939.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10939 16792 bytes

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