Malicious PDF — malware analysis report

Static analysis result for SHA-256 adeb04d8251b184f…

MALICIOUS

PDF

113.1 KB Created: 2021-04-01 11:44:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 6ab498c215a3794b70019814eccd3b49 SHA-1: 061e3e4657bf15efa000d333465e4cb63d83f080 SHA-256: adeb04d8251b184f85faa97dde44a23cf4167c5c2ad28ea7b727a40c9d60420d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://nipisod.ru/wix?keyword=atlas+copco+elektronikon+graphic+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459341/normal_602a1c19ec3a0.pdfIn PDF document text
    • http://fafijitesulexiz.mygamesonline.org/the_maze_runner_series_story.pdfIn PDF document text
    • https://cdn.sqhk.co/nuditufu/haAhfhg/boss_tu_3_tuner_true_bypass.pdfIn PDF document text
    • https://cdn.sqhk.co/zolulesar/3idZrSb/free_jio_video_calling_app_download.pdfIn PDF document text
    • http://degakak.sportsontheweb.net/jelimijidimi.pdfIn PDF document text
    • http://supariwepexafat.mywebcommunity.org/badminton_rules_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366627/normal_600607fa05dec.pdfIn PDF document text
    • http://fodibuj.scienceontheweb.net/63495173204.pdfIn PDF document text
    • https://cdn.sqhk.co/juvebuzizej/fjeiijK/dr_panda_trucks.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://noratev.myartsonline.com/why_does_my_netflix_say_connection_error.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/remington_870_express_magnum_20_gauge.pdfIn PDF document text
    • https://e0fa0743-814d-41de-b6a5-47f787911882.filesusr.com/ugd/89d2ef_05b3786fb8c2425687084191bb31f8cd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d820ecd3-bf80-47e4-bc27-3785a39ddbfa/burger_king_menu_ultimate_breakfast_platter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0349e26a-0ad2-4c3f-8d6c-ecf9a633ec46/haiku_worksheet_ks2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58c05289-a381-45d6-9cdd-f4461032affd/7801703027.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/electrocardiograma_12_derivaciones.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c818a271-6331-4eef-8662-c324317bf18f/baofeng_uv-5r_not_working.pdfIn PDF document text
    • https://711a90e7-97f2-4eab-8690-3003ec1e9b64.filesusr.com/ugd/a0905b_a601272aeafb45d196b633b2abd0cf40.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/52739151846.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcb20c24-34e2-47a1-9f24-df82325c2640/moors_and_masonry.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_off00017c83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C83 5400 bytes
SHA-256: 2ea70e5d0521539356d80162b9d493c5f214944ab4ecbd3d90b8888cd4fcee48
font_01_sfnt_off00018ebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18EBB 11608 bytes
SHA-256: a9fe4d1f4b210ca008909f6f4873e1171f82dca7d5eb9cf8459d997ceb2f5a06

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