Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f640ccd29e692e0…

MALICIOUS

PDF

82.4 KB Created: 2021-03-13 12:49:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b809dec47d6429aceec33b718a4f7269 SHA-1: a6c78db18b0eb1e23458b9f06cff431522ce0363 SHA-256: 0f640ccd29e692e0d25e718056ce6e1755fae03764d887cdb2c3cba5a503bbcc
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. An external URI pointing to 'lozipotod.ru' was extracted, suggesting the document is designed to redirect users to a potentially harmful site. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the ClamAV detection (Pdf.Phishing.Trojan) strongly suggest a phishing or trojan distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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=i+ll+make+up+your+mind+meaning
    • https://cdn.sqhk.co/dejuxafe/zifgdje/top_10_tamil_keyboard_for_android.pdf
    • https://cdn-cms.f-static.net/uploads/4367017/normal_603f97a566cfe.pdf
    • https://kemipopebu.weebly.com/uploads/1/3/4/5/134585234/waxelo.pdf
    • https://cdn-cms.f-static.net/uploads/4454048/normal_6009bcad7193e.pdf
    • https://static.s123-cdn-static.com/uploads/4453914/normal_5feafb284fe7d.pdf
    • https://cdn-cms.f-static.net/uploads/4495387/normal_603637844be2c.pdf
    • https://cdn.sqhk.co/vowibesep/dhdmihh/subway_customer_service_number.pdf
    • https://wewuketis.weebly.com/uploads/1/3/5/3/135327502/sokube.pdf
    • https://cdn.sqhk.co/livefivepa/goqhghg/damoropebesibuz.pdf
    • https://genolawibiwiz.weebly.com/uploads/1/3/4/3/134316454/zewanazukusozibivunu.pdf
    • https://mewejubakokexal.weebly.com/uploads/1/3/2/6/132681976/banokar.pdf
    • https://static.s123-cdn-static.com/uploads/4368998/normal_5ff888bb3b105.pdf
    • https://cdn-cms.f-static.net/uploads/4427501/normal_6033d88364033.pdf
    • https://cdn.sqhk.co/loganidob/vrghiM6/ximujalot.pdf
    • https://cdn.sqhk.co/mapexuze/hijhjd0/57658138326.pdf
    • https://nupinegudoxaxu.weebly.com/uploads/1/3/5/3/135350485/1536526.pdf
    • https://static.s123-cdn-static.com/uploads/4487432/normal_5ffbc2f94868a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/subopukomanaw/how_fast_does_a_110cc_quad_go.pdf
    • https://s3.amazonaws.com/niporofez/96552831735.pdf
    • https://uploads.strikinglycdn.com/files/2cc21a4e-01ec-4466-95d2-b718650e857e/imagen_de_cara_feliz.pdf
    • https://uploads.strikinglycdn.com/files/01f80d2a-5155-4609-b4b6-1d01fafeb715/how_to_tell_intermolecular_forces.pdf
    • https://uploads.strikinglycdn.com/files/7578d21d-0ec8-4594-a96f-d571c57dc20d/61771162794.pdf
    • https://s3.amazonaws.com/kewakuko/87137541490.pdf
    • https://uploads.strikinglycdn.com/files/0817abcf-6d68-46c3-97c7-e2f466180417/are_rinnai_gas_heaters_good.pdf
    • https://s3.amazonaws.com/wovedukevikov/free_sat_practice_test_2020.pdf
    • https://s3.amazonaws.com/mejados/40389094049.pdf
    • https://uploads.strikinglycdn.com/files/48ebdfef-3496-4ba3-b7c5-03642fa3cd0f/applied_numerical_methods_with_matlab_for_engineers_and_scientists_3rd_edition_solution_manual.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
    • 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_off0000eea3.bin
8e85ab4b326a3ea7c7389fd67a12ebcc163a5c8c89fbad96c2d31a1d066e23ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA3 5204 bytes
font_01_sfnt_off00010048.bin
282d4024ad5fb312b5b6d4aced513c471702766f228747a150bf561f567afd52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10048 11288 bytes
font_02_sfnt_off00012672.bin
d528b978a9021663df294195b0caaec793fcec038aedfb9ae5bdc1b32a3b4552		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12672 16112 bytes

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