Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb4d1bd886bbc74a…

MALICIOUS

PDF

150.0 KB Created: 2022-06-01 21:12:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 04fbfdaa8cbdeed751c6a06d38bb5d80 SHA-1: 65421a92f682afe58695368a5efbdd4923c0220b SHA-256: eb4d1bd886bbc74a4abd5f4061764fe1c5b7a9f2540174192e78b512f445f43b
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely used for phishing or distributing further malware. The document body is heavily obfuscated, preventing a clear understanding of its specific content, but the presence of the malicious URI and the detection verdicts strongly suggest a phishing or credential harvesting attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://lovig.co.za/XSRYdR1H?utm_term=antiarrhythmic+drug+classification+pdf+book+download+online+free
    • https://exihomes.com/userfiles/files/10449925983.pdf
    • http://support-cmu.com/filedata/file/jikixide.pdf
    • http://cesvil.it/filesUploads/file/46007710346.pdf
    • https://vizuwaju.weebly.com/uploads/1/4/1/9/141960776/buwak.pdf
    • http://qianxish.com/ckfind_image/files/17272327528.pdf
    • http://concienciafiscal.com/kcfinder/upload/files/15766938399.pdf
    • https://aljuboori.com/userfiles/files/kuraxelowon.pdf
    • https://mibinataxufix.weebly.com/uploads/1/3/1/4/131438539/5890001.pdf
    • http://www.ascondir.com.br/Gerenciador/kcfinder/upload/files/31138024695.pdf
    • http://smartvoicecom.com/userfiles/13385425097.pdf
    • https://donadoleli.weebly.com/uploads/1/3/4/5/134519335/9af94bdb3e98.pdf
    • https://bagekitavaseb.weebly.com/uploads/1/3/1/0/131070055/e5494d1e7694e.pdf
    • https://wetegawufuju.weebly.com/uploads/1/3/5/3/135302163/2693335.pdf
    • https://misekijenag.weebly.com/uploads/1/3/1/3/131380320/ramojoxosudewosefu.pdf
    • http://bm-shower.com/userfiles/files/waripenologujixunavajozil.pdf
    • http://neza.cz/UserFiles/File/guwakazedarid.pdf
    • https://tunomofezu.weebly.com/uploads/1/3/2/3/132303147/9990691.pdf
    • http://gtlitalia.com/userfiles/files/21720152394.pdf
    • https://xemawegomefere.weebly.com/uploads/1/3/4/7/134736207/9b1ff16796cabde.pdf
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1628d473d9d52c---lezexenitixasozovesiwubix.pdf
    • https://giximanuv.weebly.com/uploads/1/3/4/5/134526051/09443a.pdf
    • https://rinumobepora.weebly.com/uploads/1/3/4/3/134377952/gekejikevumede.pdf
    • https://roralolew.weebly.com/uploads/1/3/0/7/130775143/gojopum.pdf
    • http://www.pnl.ac.id/asset/kcfinder/upload/files/38679739378.pdf
    • https://bofifufamid.weebly.com/uploads/1/4/1/5/141549867/mezatebet_vukigu_rasodefusapa.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_off0001d524.bin
1394c80f8851a31222e316c88f091bf575b3c25baeef35d6420d2c68a54cd31b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D524 25576 bytes
font_01_sfnt_off00021619.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21619 16792 bytes
font_02_sfnt_off00022e30.bin
29b3fadb5116dca1933d917ae8c9c18f5e458896c1c5e4d627b49e489f36d39b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22E30 11580 bytes

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