Malicious PDF — malware analysis report

Static analysis result for SHA-256 a69643c230978a79…

MALICIOUS

PDF

73.2 KB Created: 2020-12-29 19:39:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: d51315b1c031df1415ce3777cb384b6a SHA-1: d608f0ac261a093a77c9768e8e3a45070613202c SHA-256: a69643c230978a7970724c0b146547f82fcd2a5699ef3f7219e073334b1072ba
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, which is designed to lead users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is likely part of a phishing campaign to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=general+hospital+spoilers+week+of+september+21+2020 In PDF document text
    • https://wagizubim.weebly.com/uploads/1/3/4/4/134470033/sofunuvozutodo_rifoxovetugedu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2c5d6579-3819-47bb-84e3-9c7854232391/96353612099.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3d6ec5a-0887-45c5-b84d-006042ccda30/88990735229.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55c676ec-c0f1-4ed3-9caf-67cb12c1c975/guitar_tabs_for_unchained_melody.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58a14ac8-de37-453d-a171-ab805c75cd52/94493439406.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/57667219066.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/hydroponics_beginners_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0cc3a53-3dff-4f66-9267-e72d20e7da9c/xajuledokitelegom.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/air_and_noise_pollution_control.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2364f75-e7e9-4c7b-a592-155645237d79/98296345774.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_off0000d141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD141 5584 bytes
SHA-256: 92971232ab9fc6eed14a5c5eddfe533bdf4de3767aeafe98c0f1005ec33d2a81
font_01_sfnt_off0000e41f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE41F 11028 bytes
SHA-256: 1d23f7fa868117676feb6c3c79231a235cb21b88d185e23cb003846478dc92dd
font_02_sfnt_off00010969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10969 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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