Malicious PDF — malware analysis report

Static analysis result for SHA-256 9108996c4fa38f9f…

MALICIOUS

PDF

82.5 KB Created: 2021-03-15 00:42:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3cced575c46109eaef226825fbf3eb25 SHA-1: b280a30578ab409f920aa14e70ff0ce2e24f648f SHA-256: 9108996c4fa38f9fc0fc1674fb98abb87f1c0ee9c58ff4e99b8d06f9b4637da1
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • 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://dafemum.ru/wix?keyword=flour+bluff+texas In PDF document text
    • http://forovasax.medianewsonline.com/microsoft_access_2016_requires_visual_basic_for_applications.pdfIn PDF document text
    • https://poteluteko.weebly.com/uploads/1/3/1/1/131164474/a3d02.pdfIn PDF document text
    • https://mekegeno.weebly.com/uploads/1/3/1/8/131856852/zegomuwamebigir-donuvodomuku-dolugusekitus.pdfIn PDF document text
    • https://zelivetatop.weebly.com/uploads/1/3/0/8/130814581/gabamigobano.pdfIn PDF document text
    • https://cdn.sqhk.co/lixipadiwel/ghifha2/amazon_kindle_unlimited_subscription_offer.pdfIn PDF document text
    • https://fubafutevulaz.weebly.com/uploads/1/3/1/8/131856433/lixixabedodabiri.pdfIn PDF document text
    • https://cdn.sqhk.co/fisoxinizo/SKgfUbL/paradise_island_show_2020.pdfIn PDF document text
    • http://wojisub.mypressonline.com/4883295443.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://de74b992-0de1-402f-a2cc-438209b178b2.filesusr.com/ugd/2693ef_a207a7e62ec74960a1096720d510f21b.pdf?index=trueIn PDF document text
    • http://wumafopid.onlinewebshop.net/cholesterol_diet_guide.pdfIn PDF document text
    • https://2a403a33-5f6e-4534-96f9-742aa7325afc.filesusr.com/ugd/d2da83_d8728f5108f64d779300edd32a785e73.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d00e2e60-0d58-448f-8493-4735b3e3e06e/87464353916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deca3a90-834f-4501-aa78-61ff415f753c/pokemon_ultra_moon_guide_ign.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07161b38-ceb6-43eb-a70c-043a624b7764/fumut.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/sabulozijikebefesopebona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b82e9e5-3345-43ab-b88e-f27d5c043e54/what_are_the_symbols_on_amiibo_cards.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/original_mark_sheet_of_10th_2019_cbse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/048db32e-a47a-4ed0-b9c7-aa9646e92968/73840499601.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_off00010693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10693 4924 bytes
SHA-256: 97aceb67c36fb9d21e036960008212bf9bcf5a96e611bfd303eced772fe711bc
font_01_sfnt_off00011763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11763 11108 bytes
SHA-256: 446ca4fbf5ae5210486ff2ac47ee5541c2b260afedfb5f89c6b7d58a8a5264ad