Malicious PDF — malware analysis report

Static analysis result for SHA-256 832f9cb8026cd2f7…

MALICIOUS

PDF

70.0 KB Created: 2020-12-17 05:17:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 7204a328b12b9c793c1602e3be8e06a0 SHA-1: f68275e9bb077a7adb0f87dac625dd431e2972f2 SHA-256: 832f9cb8026cd2f76476ddb8e067e85b5f8e8f4746c2e3dfa235ebd604821265
194 Risk Score

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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=btv+solo+review In PDF document text
    • https://static.s123-cdn-static.com/uploads/4460946/normal_5fc78cad2bc4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485014/normal_5fa978dc3f351.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483602/normal_5fc7dd2e025c2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc1758ebe9b6939510ebb53/t/5fc8648cd17d55300fad0865/1606968461880/valuzizugukoxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fe7d5e9-7c86-454f-83b9-d930c15089b1/varifonu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc052d83dfdd95b60d21819/t/5fc6a589a97599144ee37418/1606854027208/basowa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24d2e2d2-76cd-4a43-9de9-6bb39f966015/30866391315.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dc938f4-ea7c-481c-a2e1-23b74fd68bdc/90230430718.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4e5cef7cf8c75404468c7/t/5fd031f85ec17a4c66892862/1607479801648/sugar_rush_3d_model.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f78fec7b-fbaf-4fc8-97f0-179ea4107446/sanyo_remote_control_code_for_directv.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3d0288139af0376575e17/t/5fcba2a733fb14715cbf8237/1607180968041/billie_eilish_songs_listen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ab15bd0-0013-4e37-956b-9e2eeaccc17e/eso_how_to_move_ui.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc36d523dfdd95b60e52950/t/5fc9ea3355485c3109b4e474/1607068212170/18830911430.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe8f5116-397f-41c0-99be-a20d86e29657/97896772841.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91b8bab2-b8a7-4d92-ba55-07290d1c1aea/university_of_notre_dame_press_address.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_off0000d741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD741 4668 bytes
SHA-256: f16c90ba57ea543fafaa6f6b2079c77c470319ca98330cf332c2fb59f2ab04db
font_01_sfnt_off0000e748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE748 11108 bytes
SHA-256: 1d11ad86e1f495feaaebc4537d30cd0fd53808275c4ab105adb3ca5b1ddf06c1

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