Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b74375b773a848…

MALICIOUS

PDF

71.0 KB Created: 2021-02-17 05:14:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 73ecc85d3dfb6706e20347929d398878 SHA-1: 41768b1c15d8ed9f3ab506aa3b966902542d2f1c SHA-256: b6b74375b773a848c235b4fad4b7bc544a1bb2fcbf4d81512dbc5a656245aa42
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to search terms, further supporting a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/strik?utm_term=durga+kavach+lyrics+in+sanskrit PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4462976/normal_5ffe8b828c046.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366978/normal_5ffeb0c5ed1f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482405/normal_5fee291bdc1a8.pdfIn PDF document text
    • http://ita-fitness.fun/neon_genesis_evangelion_on_huluxnnv9.pdfIn PDF document text
    • https://wudumimimi.weebly.com/uploads/1/3/4/3/134356267/9c2144f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365580/normal_6008b30fbba66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480732/normal_60158a0d86f95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502819/normal_5fe785b4a7857.pdfIn PDF document text
    • http://eferevole.com/70623848571vsdv3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/78981742991.pdfIn PDF document text
    • http://kifasonow.rf.gd/express_vpn_apk_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/calendar_ortodox_mai_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/chair_hd_images.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/irda_guidelines_for_life_insurance_claim.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF34 5288 bytes
SHA-256: e2eed56d58f100797ac6763a54af874777548b4264fb475b16cc40447fc2cb34
font_01_sfnt_off0000e13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13D 3740 bytes
SHA-256: 380998d1091fdc20b7f1c1aeba8d78f77d4373c296f83289b97c927f51825d1c
font_02_sfnt_off0000ecb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB6 9824 bytes
SHA-256: e909af0cb13b853f13da2d0b0292b0f7a571c31ad8ee9d8d932cc5f611ab0974

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