Malicious PDF — malware analysis report

Static analysis result for SHA-256 6186d46715d7a104…

MALICIOUS

PDF

98.5 KB Created: 2021-04-06 19:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 79bb807516f9cff215aac20c439573e1 SHA-1: f49ba220abed5e6c0ac5d1af8d9e151434a3d8c3 SHA-256: 6186d46715d7a10460737ae2ec31723b63480a45135a85d8549a437a49c8dc3a
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, indicative of a link farm or phishing operation. ClamAV detected this file as 'Pdf.Phishing.Trojan', and ML classifiers also flagged it as malicious. The presence of embedded URLs and the overall structure strongly suggest an attempt to redirect users to malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/strik?utm_term=shooting+drills+football+coaching PDF link annotation
    • https://cdn.sqhk.co/jasurisunav/hf5NSjf/45403405834.pdfIn PDF document text
    • https://mikezopa.weebly.com/uploads/1/3/4/3/134366842/1968239.pdfIn PDF document text
    • http://nozetexopawovu.iblogger.org/58696197570.pdfIn PDF document text
    • http://femusawar.iblogger.org/zadokexejijipokita.pdfIn PDF document text
    • http://shopsmmv.site/tazurudinudopubamuper0eyw.pdfIn PDF document text
    • https://cdn.sqhk.co/jogowijalaro/Ezghlha/recipe_icing_cake.pdfIn PDF document text
    • http://6gusevshop.website/accident_reporting_center_windsor_ontarioi8c8q.pdfIn PDF document text
    • https://cdn.sqhk.co/dederubap/chdiahi/android_messenger_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/dogovonediwa/HCghhgj/suredidotezijiwuw.pdfIn PDF document text
    • http://reduslim-shop.site/76062286767790kg.pdfIn PDF document text
    • http://meblik.su/research_paper_ppt_templatez0i34.pdfIn PDF document text
    • https://nodararikerat.weebly.com/uploads/1/3/4/8/134885074/1884156.pdfIn PDF document text
    • https://dufofumiwiz.weebly.com/uploads/1/3/5/3/135309849/vexelu.pdfIn PDF document text
    • https://cdn.sqhk.co/zipirevofu/1B3iVuN/download_age_of_apes_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tigoxexuda/fhYjdYp/go_dog_go_ball_launcher_reviews.pdfIn PDF document text
    • http://redefotifakafaj.22web.org/convolutional_neural_network_layers.pdfIn PDF document text
    • https://cdn.sqhk.co/kejofuvata/T2lZtEM/zirat.pdfIn PDF document text
    • https://jowavuzawevubab.weebly.com/uploads/1/3/2/3/132303017/b4620330e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://powazov.rf.gd/minna_no_nihongo_n5_renshuu_b_answers.pdfIn PDF document text
    • http://jupojef.rf.gd/99338455227.pdfIn PDF document text
    • http://veselawo.rf.gd/50161717810.pdfIn PDF document text
    • http://xodufabotuxav.rf.gd/fipejelibitavar.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_off00014021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14021 5528 bytes
SHA-256: 4ed901dccfb4909222651afb88ddca5181d2cd6db4cda7a7c255a12b5b813699
font_01_sfnt_off000152e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152E2 12548 bytes
SHA-256: 1dc1f3192d1ced66e1aece58bedb58677812aa71926726de0c10921f26845d21

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