Malicious PDF — malware analysis report

Static analysis result for SHA-256 62c76c2e67a1cd87…

MALICIOUS

PDF

80.0 KB Created: 2021-05-16 13:30:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1360abbc97209ec81de8a3350326741 SHA-1: de77125d3a4285c11c2c8ca67975426a95539f4f SHA-256: 62c76c2e67a1cd87313c2219ca2cedd3d333c47130b27592dd000607e1ff85d6
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO link farms or redirecting users to malicious sites. One prominent URL, 'https://jacksth.ru/strik?utm_term=genie+model+h6000-07+remote', suggests a lure related to a specific product. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jacksth.ru/strik?utm_term=genie+model+h6000-07+remote
    • https://cdn.sqhk.co/livisade/bnRWem8/nujanagufaro.pdf
    • https://cdn.sqhk.co/fikalibumi/pUyzozu/fovuretisukegemulinurepo.pdf
    • https://cdn-cms.f-static.net/uploads/4412164/normal_6067651e9130d.pdf
    • https://cdn-cms.f-static.net/uploads/4492257/normal_6059e6932c182.pdf
    • https://murozukuzofapu.weebly.com/uploads/1/3/4/7/134716639/3811442.pdf
    • https://cdn-cms.f-static.net/uploads/4414487/normal_6051698200db9.pdf
    • https://wixezijuni.weebly.com/uploads/1/3/5/3/135312108/dcbf6a321.pdf
    • https://fugunukotuji.weebly.com/uploads/1/3/4/5/134589730/3094612eead3.pdf
    • https://cdn-cms.f-static.net/uploads/4448343/normal_6022b4bdb4842.pdf
    • https://fademorojotuk.weebly.com/uploads/1/3/1/3/131379253/wozubu.pdf
    • https://cdn-cms.f-static.net/uploads/4500453/normal_60303e5af3b42.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kotenu/41721791331.pdf
    • https://s3.amazonaws.com/rupatojuko/riragonamojojav.pdf
    • https://s3.amazonaws.com/ganubifirigevi/94085590471.pdf
    • https://s3.amazonaws.com/dazuxujepov/68837716694.pdf
    • https://s3.amazonaws.com/xujitezu/damaputetafitan.pdf
    • https://s3.amazonaws.com/bitizopovopaso/19794459966.pdf
    • https://s3.amazonaws.com/mefadedosuw/pojolanalawiwufase.pdf
    • https://s3.amazonaws.com/votuweroxigezog/id_dopbnk_full_form.pdf
    • https://s3.amazonaws.com/megodipewukitoj/82602675463.pdf
    • https://s3.amazonaws.com/gixirojozogufux/bushnell_hd_trail_camera_manual.pdf
    • https://s3.amazonaws.com/pusixa/arya_2_song_ing_audio.pdf
    • https://s3.amazonaws.com/fikuvine/financial_ratio_analysis_template.pdf
    • https://s3.amazonaws.com/dopugaxelelema/does_walmart_sell_ps5_games.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_off0000f7ef.bin
092d9bfbce1166a1efa4138c02d1a410e7d67a1326bdc8419e5ec5f95c9afcb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EF 5116 bytes
font_01_sfnt_off00010939.bin
67c34fdc7af42ed97350aeae3fc85d1b60a2839a6c1ff9e002d36eeeb4eae81e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10939 11808 bytes

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