Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b8918df144d5ece…

MALICIOUS

PDF

78.6 KB Created: 2021-03-21 22:39:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6759b51ea92842ef35309da78a6f245a SHA-1: 607ec900b45c95fa9131333b4965ad175366511c SHA-256: 5b8918df144d5ece46b60ec7c90e24894ba6c02ef1a3ac6d6131015169c0858b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://lozipotod.ru/aws?utm_term=2019+camry+se+hp', suggesting a phishing or credential harvesting attempt. The document body, though heavily obfuscated, contains metadata related to 'wkhtmltopdf' and a date, which might be part of a lure to appear legitimate. No scripts were extracted, but the presence of external URIs and the ML/ClamAV detections strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/aws?utm_term=2019+camry+se+hp
    • https://vomakitiba.weebly.com/uploads/1/3/1/3/131384058/0e0c33b5.pdf
    • https://cdn-cms.f-static.net/uploads/4413462/normal_5fdbc6d5859a5.pdf
    • https://static.s123-cdn-static.com/uploads/4460954/normal_6007e4d452568.pdf
    • https://cdn.sqhk.co/jivazufevi/cjc32Ye/world_war_series_harry_turtledove.pdf
    • https://jotevalosovem.weebly.com/uploads/1/3/4/3/134385082/punevubop-mefanurozunomo.pdf
    • https://nanarimedut.weebly.com/uploads/1/3/2/6/132695535/tavosar-tazipifodugakis-ponojeso.pdf
    • https://cdn.sqhk.co/zolaxadivowe/gdhiIji/24275485672.pdf
    • https://static.s123-cdn-static.com/uploads/4426072/normal_5ffb8749a2b77.pdf
    • https://basitonivi.weebly.com/uploads/1/3/4/5/134584834/loramevivu_kabapusifaxop_wasumexezegusiz_wubapojuba.pdf
    • https://cdn-cms.f-static.net/uploads/4379500/normal_6031331a8187c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3f3ef340-2635-421a-9d1a-c82c4df1e9d4/44477387477.pdf
    • http://vewokepewaki.epizy.com/wunopivi.pdf
    • https://uploads.strikinglycdn.com/files/d61d84d9-d260-474b-80d0-f31a505a13ed/what_kind_of_government_did_greece_have.pdf
    • http://xilijimerufosat.rf.gd/98537204144.pdf
    • https://uploads.strikinglycdn.com/files/598eadce-e917-4009-9b5b-4de1fedbf260/oxford_english_grammar_course_advanced_download.pdf
    • http://dovobol.epizy.com/active_and_passive_voice_book.pdf
    • http://jetiloguj.rf.gd/medidas_cautelares_cpp.pdf
    • https://uploads.strikinglycdn.com/files/37db99d5-1aa9-42da-9a40-e14de276bae8/the_divergent_series_insurgent_hindi_dubbed_480p_download.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f492.bin
073568ea27f35318b715f5894c1ca2654e442ad5a019dc768380503c7a29e398		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF492 5628 bytes
font_01_sfnt_off00010792.bin
f3bcac48d7d9482e29662399450d2803625c46e0e2eb328090ec2922d612d492		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10792 10964 bytes

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