Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7f6a5283c9c49b7…

MALICIOUS

PDF

78.9 KB Created: 2021-02-22 18:52:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b3c40a47399bceba39f0c4e8694f745a SHA-1: ec2f7ba0c675cccfdd6d5b632096aa2fa0d5f654 SHA-256: c7f6a5283c9c49b7119880a3b30d114f43dcbf36b4dfd869bb4cad47f233386d
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure or a distribution point for further malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content, possibly for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=what+do+you+say+to+someone+who+says+they+are+stressed PDF link annotation
    • https://cdn.sqhk.co/folukize/fhCFfu0/facts_about_the_pyramids_of_egypt.pdfIn PDF document text
    • https://cdn.sqhk.co/pekotegafod/hjlgeoc/88211946065.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406463/normal_5fe3862ed9046.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/geEqihj/evil_family_escape_scary_creepy_horror_game_online.pdfIn PDF document text
    • https://cdn.sqhk.co/tovisegag/izoidhf/ios_auto_clicker_iphone_11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384640/normal_5fe2871b009a4.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/gf5jhf5/xutuzu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479684/normal_5fc9f9a7ddfa6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481056/normal_6031ce2b6f1b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414169/normal_5fdc0bfccc9fe.pdfIn PDF document text
    • https://cdn.sqhk.co/jogibigeda/LJO9Vic/national_youth_football_championship_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/DngeJja/within_temptation_what_have_you_done_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/vafodagusun/6f96zSy/58571172635.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452594/normal_6019f14c0b889.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gobavaduxa.epizy.com/31699257614.pdfIn PDF document text
    • http://lodexizizaki.rf.gd/65694300799.pdfIn PDF document text
    • http://demiwadipojaz.epizy.com/56847620631.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_off0000f9b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B9 5240 bytes
SHA-256: 493243fc515774ee27f53f55c81cffd87cd51003e67f8e814f5b2a30fc84fa7c
font_01_sfnt_off00010b7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B7A 10244 bytes
SHA-256: 45c678db5be1b5cc3df4be15ff1c564822575955e1aae2c97cde66388c26b665

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