Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca31eab010bda3cd…

MALICIOUS

PDF

77.2 KB Created: 2021-02-23 03:06:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8c44d8b4eecddeb28bfd688454fed554 SHA-1: 1dbdc1b4a20311661263d8cdaf2ef1a16ca7ef3f SHA-256: ca31eab010bda3cd4ddbf78e298eeaf66e8b913fd4bda67a9750d4a9b218e129
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=pride%20and%20prejudice%201940%20full%20movie%20123movies PDF link annotation
    • http://lefavapexusa.iblogger.org/74868390236.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378393/normal_6022caf2f3bc9.pdfIn PDF document text
    • https://cdn.sqhk.co/muzexeragod/jjhdphp/best_video_player_download_for_laptop.pdfIn PDF document text
    • https://cdn.sqhk.co/xanovika/Hig5CQI/pofigasiwizibuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365586/normal_6001d01b73318.pdfIn PDF document text
    • https://kafememum.weebly.com/uploads/1/3/4/6/134616831/luvidofemune.pdfIn PDF document text
    • https://sibuzowad.weebly.com/uploads/1/3/2/8/132814892/midodilemuga.pdfIn PDF document text
    • https://mubajodopiwal.weebly.com/uploads/1/3/1/4/131454521/e45488594ef1.pdfIn PDF document text
    • https://ganafotereko.weebly.com/uploads/1/3/1/1/131164127/mijijibaxunamejopi.pdfIn PDF document text
    • https://migofaxukov.weebly.com/uploads/1/3/5/3/135394112/fuvaladiwuzivek.pdfIn PDF document text
    • https://badosesidexezub.weebly.com/uploads/1/3/0/8/130874160/vorixabexabofes-jekibebufamo.pdfIn PDF document text
    • https://voloripilobolim.weebly.com/uploads/1/3/4/6/134635915/1395067.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426820/normal_60292d65d9686.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369900/normal_5fc59b923b119.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/tujeviwakirawu/aperture_photography.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/computer_maintenance_report_format.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/53092414644.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/tap_tap_heroes_peak_guide.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_off0000ead5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD5 6172 bytes
SHA-256: bbd92070c8cae22147e81bac2645bf9ecf0e6b0cb172bb0b264f1550092f66e3
font_01_sfnt_off0000ffd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD1 11092 bytes
SHA-256: a2939491e8ffbc19e4d35829b28f2455013ad84c104ee2ba38ce650c8a803c84

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