Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bad510628f4d8b4…

MALICIOUS

PDF

75.0 KB Created: 2021-03-10 02:00:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: cf20c883b27338de2e6b2cf44eff6e6a SHA-1: ec9a07d7b0ec98a841926214b68ffe9f5e3c267a SHA-256: 9bad510628f4d8b4acd7d433c164e9b1e6047c283c9e41ac986eed617bf80d59
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, with one prominent malicious URL pointing to 'lozipotod.ru'. This suggests the document's primary purpose is to redirect users to potentially harmful websites, likely for phishing or malware delivery. ClamAV also detected this file as 'Pdf.Phishing.Trojan'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://lozipotod.ru/123?utm_term=galaxy+alien+shooter+mod+apk+revdl PDF link annotation
    • https://wezifujizofuji.weebly.com/uploads/1/3/4/9/134904593/wazibemoror.pdfIn PDF document text
    • https://voloripilobolim.weebly.com/uploads/1/3/4/6/134635915/1791167.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405907/normal_5ff6021f2ff7f.pdfIn PDF document text
    • http://xejebowipuzusim.iblogger.org/are_there_any_bison_left_in_america.pdfIn PDF document text
    • http://makululi.iblogger.org/24461056086.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386363/normal_5fdd9d8ac86af.pdfIn PDF document text
    • http://januvasiw.22web.org/43904108682.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/84cbfc3c-ccfb-4e69-af54-47d6be84c3f0/what_is_the_best_indian_food_to_eat_at_night_for_weight_loss.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/business_strategy_template_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/chrome_entire_page.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/795bd3ba-4213-4cd9-bc71-ff1e99ad633e/femabetuxoxufotabibipukuk.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/74459273267.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf87266e-7ec7-436f-9da3-66b80a142638/how_to_connect_auvio_speaker_to_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/6787530988.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/663832b5-5af7-4480-8c74-a57d258f5682/how_to_use_the_cuisinart_automatic_grind_and_brew.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/how_cars_work_book_buy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f553711-e319-4ff1-a18b-024bc2644975/aroma_rice_cooker_6_cup_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/cuales_son_los_alimentos_que_mas_inflaman_el_estomago.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_off0000dd00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD00 5524 bytes
SHA-256: 015df600ddc6412d0cf7fe254ebdf83b0957e24b33b7c892b64b881dd33405c1
font_01_sfnt_off0000efa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA7 3024 bytes
SHA-256: cf5ed4f450e5fc1fa31c8ac31b5dbd05637a4ba05cdfa332ae769b600578e534
font_02_sfnt_off0000fad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD5 10408 bytes
SHA-256: 2ac1670f1d8a6de6d05c01dd5b796252acdc3de3f53396fc6dad0d02b9af83d3

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