Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb6418f4d1f4d21f…

MALICIOUS

PDF

78.9 KB Created: 2022-06-07 05:06:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 24590b70627f576eb5bdeed893a4e5c0 SHA-1: 8fe8afa011fe226fd3af2a5bc817eb39cfd2efdd SHA-256: eb6418f4d1f4d21f11adf6bcaf88d22a6e31075cb7e04a38cdceb36c39e872f7
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by multiple heuristics, including a critical ClamAV detection and an ML classifier. It contains numerous external links, with a significant number pointing to potentially malicious domains, suggesting a phishing or malware distribution attempt. The PDF_SEO_LINK_FARM heuristic indicates a large number of generated links, a common tactic for SEO poisoning or driving traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://lazav.co.za/YmrXLWy8?keyword=welcome%20to%20the%20underworld%20pdf%20audio%20download%20full
    • https://walkandsmile.com/userfiles/file/46246302571.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1628b69ac74c3a---59865286577.pdf
    • https://bizokotipalan.weebly.com/uploads/1/3/4/7/134771030/2531390.pdf
    • https://fibovasononeboj.weebly.com/uploads/1/3/4/7/134732795/4f15d854cade5.pdf
    • https://dukuzujapeded.weebly.com/uploads/1/4/1/7/141761589/sotato.pdf
    • http://atelier-tilia.cz/userfiles/files/39169320465.pdf
    • https://mivifasev.weebly.com/uploads/1/3/1/4/131483453/6416184.pdf
    • https://vefoduwuwi.weebly.com/uploads/1/3/4/9/134902927/baa40ba015e1.pdf
    • https://kagilomit.weebly.com/uploads/1/3/4/6/134669997/gelofilejebeda.pdf
    • http://s8radziejowice-paszkow.pl/userfiles/file/40475946990.pdf
    • https://tinonerapize.weebly.com/uploads/1/3/5/3/135349756/6986171.pdf
    • https://sawulazu.weebly.com/uploads/1/3/4/5/134588127/firojarota.pdf
    • http://bantinnhadat.com/users/files/22323719694.pdf
    • https://gavedomosuzutu.weebly.com/uploads/1/3/4/2/134234743/mirexo.pdf
    • https://pavufunipuz.weebly.com/uploads/1/3/4/2/134265556/9876598.pdf
    • https://najoduvojubowi.weebly.com/uploads/1/3/2/8/132815002/xeguxisoma-rixigi-sarigineto-mepaso.pdf
    • http://hanker.ru/web/img/files/53541705096.pdf
    • https://nuzidobekoxap.weebly.com/uploads/1/3/4/7/134750252/dexodel.pdf
    • http://szybkieprawko.pl/szybkieprawko.pl/user/admin/fck/file/pisojifanobimenekivizikuw.pdf
    • https://sijovusotepil.weebly.com/uploads/1/4/1/2/141251362/zekurutowolopog.pdf
    • https://zigekapamoni.weebly.com/uploads/1/4/1/4/141496555/6412174.pdf
    • https://tasapeneme.weebly.com/uploads/1/3/5/3/135308717/jujibuzowuteniga.pdf
    • https://vifewilepame.weebly.com/uploads/1/3/4/0/134012930/xuvubefolukonix.pdf
    • https://fogisitulen.weebly.com/uploads/1/3/0/7/130775537/vefewim_jemebozet_katuwajuz.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_off0000cb0e.bin
929b59464599c9652e2b9061d17f54683608cc3632f86c308e134e02ffaa8829		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB0E 10896 bytes
font_01_sfnt_off0000e412.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE412 16792 bytes
font_02_sfnt_off0000fc24.bin
abd6607f1520020dc12bac41de74bd978819c7413946db735d8bf676ed9f591b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC24 18400 bytes

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