Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e952130a5ced52d…

MALICIOUS

PDF

89.4 KB Created: 2021-03-04 08:32:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c80fd306f86e228801e9738aa06ea156 SHA-1: fed07d963eac9e77afffeccd9295567067801418 SHA-256: 4e952130a5ced52d611cb609f6d29c31671d0bd4d8e8837b3f7dd1b6b6831d6d
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one specifically pointing to a URL related to 'Cyberpunk 2077' configurations, suggesting a lure for phishing or malware. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and 'SE_PASSWORD_ARCHIVE_LURE' suggests a common tactic to bypass security scanners. ClamAV also detected this file as a phishing trojan.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://kuzutuzo.ru/award?keyword=cyberpunk+2077+reddit+config+file PDF link annotation
    • http://it50disconto.info/367178593047dz1i.pdfIn PDF document text
    • https://dumaxenuwumav.weebly.com/uploads/1/3/3/9/133997891/litinamikasafi.pdfIn PDF document text
    • http://marketeuro.pro/android_update_for_samsung_note_9j65zj.pdfIn PDF document text
    • http://mgacessoria.online/myrightel_app_ios0bkuf.pdfIn PDF document text
    • http://tersq.fun/what_to_use_to_dye_your_hair_without_glovesr08ci.pdfIn PDF document text
    • https://xomitemekebok.weebly.com/uploads/1/3/4/8/134881854/tewowepu.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/jaRS7Af/zikefixavivore.pdfIn PDF document text
    • http://grandov.pro/piwixedademujugakuwikih4gnh.pdfIn PDF document text
    • https://mosaminaworite.weebly.com/uploads/1/3/1/6/131636744/magewirozujerubosa.pdfIn PDF document text
    • https://cdn.sqhk.co/xexanodu/ggQlAh7/kavasufomeketididipelu.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/wibadinavosunom/converting_time_to_minutes_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/tefur.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/do_stock_markets_closed_on_good_friday.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/ejemplos_de_dialogos_en_espanol.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/11763331260.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/declaracin_universal_de_los_derechos_humanos_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/poguwexa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000110a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110A6 3292 bytes
SHA-256: c882e880fc0e07e8e45863162a69d9c7998410eec3fff18d8f85183f64502095
font_01_sfnt_off00011c7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C7C 5500 bytes
SHA-256: 773dbdeaeeb8e1214af64fe698662257c5530a46e9c265bca294833a76e5cb4c
font_02_sfnt_off00012f57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F57 13708 bytes
SHA-256: 069a116cec5737066ba450b7cb31d17305982bce762f253440272a77982c2951

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