Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eaf024e6ad223b9…

MALICIOUS

PDF

70.8 KB Created: 2020-12-31 02:50:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 83b75f9f9090d9f53ec538996d99eadc SHA-1: e06469356ef9c9dbd084bfde49f788720e646bfa SHA-256: 6eaf024e6ad223b96554197b622d133dd25bec9b81f6d10f97d43c99f5daa9d8
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains heuristics indicating it is a phishing attempt and a link farm, with one URL specifically mentioning 'device manager windows 10 file location' to lure users. The ML classifier and ClamAV detection strongly suggest malicious intent. The 'SE_CLICKFIX' heuristic indicates the document may instruct users to execute commands, a common tactic for bypassing security measures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://trafffe.ru/strik?utm_term=device+manager+windows+10+file+location PDF link annotation
    • https://bozalugim.weebly.com/uploads/1/3/4/3/134343660/xasagoboralader.pdfIn PDF document text
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/jebelilukaxigesom.pdfIn PDF document text
    • https://cdn.sqhk.co/zijikunu/bjLhagd/smashbox_eyeshadow_trio.pdfIn PDF document text
    • https://pizijejubuga.weebly.com/uploads/1/3/4/8/134883891/205025.pdfIn PDF document text
    • https://sezemizom.weebly.com/uploads/1/3/4/6/134622585/vovovozexapi-bepoga-zinuz-zibifugo.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/baxunaf/dialogue_worksheet_3rd.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/john_deere_shop_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/15907752406.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/91630307048.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/aperiodically_poled_lithium_niobate_waveguides.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/non_rien_de_rien_song.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F1 5684 bytes
SHA-256: ee8facae0ddce0017b28ca4e0bf4e4f39296090c34fae6f81127c66bd430d9ef
font_01_sfnt_off0000ea51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA51 10720 bytes
SHA-256: bcfaf51c8424236125bc3e91e7672144dbca2d2eb071c7e6e9147df307685212

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