Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda00f2a6e930c85…

MALICIOUS

PDF

66.7 KB Created: 2021-04-01 10:54:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 39767546126e27768e460848b5a71922 SHA-1: 9fc72cf63a0994dd1b3c2c47f9044ef847af4d27 SHA-256: fda00f2a6e930c85d6fe87537de57708515816a846944432243c75903a3af48a
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 0.9998

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
  • 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://crophysi.ru/strik?utm_term=top+secret+recipes+full+episodes+online PDF link annotation
    • http://czecheducation.space/50719930435lguzz.pdfIn PDF document text
    • http://copyrightshelpscenters.com/788506182704kq2x.pdfIn PDF document text
    • http://esagafow.fun/farewell_to_manzanar_audiobook_chapter_3iwco3.pdfIn PDF document text
    • https://cdn.sqhk.co/gelowidabik/S2heigI/begifuxuseweti.pdfIn PDF document text
    • https://cdn.sqhk.co/pifajaloro/jfRjbkm/23191848267.pdfIn PDF document text
    • https://cdn.sqhk.co/dutimapo/gjjoasB/47092277918.pdfIn PDF document text
    • http://fasumaxupul.iblogger.org/honda_maintenance_code_b1234.pdfIn PDF document text
    • http://lollipopa.online/kigeginewolewexolojededegzki63.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0bef8565-087b-457a-960c-b0529baba50c.filesusr.com/ugd/638000_dcc1d8c203bb4c82a4ebdcc179c6720f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/45412763428.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6206e9e8-4296-4a5d-8045-be820fb83317/34658559636.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbf99b76-d48c-4559-9609-4a3d312e2fba/kowovumibipanonajumu.pdfIn PDF document text
    • http://vazojebimuvap.epizy.com/wogosiratexedajiwo.pdfIn PDF document text
    • http://nufeluzuxaluw.epizy.com/ap_biology_textbook_download.pdfIn PDF document text
    • https://57eba762-b826-4879-8d7a-7f480aba2934.filesusr.com/ugd/e89c2b_9e8cbbbd456b4d2aa0b78c799f632dbb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wukara/47146652042.pdfIn PDF document text
    • http://wutopurejopagus.epizy.com/the_green_mile_boss_quotes.pdfIn PDF document text
    • https://17673d3b-e5d0-4e0e-8211-f079fadf35f5.filesusr.com/ugd/13ae68_5a9c6ccb887c49b69067812fead3f7fc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/mugiwejamubofesu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC880 4888 bytes
SHA-256: 8d82dbf642673b23f888dc208d5622381a169fd1205a5370900606147ff8a8fe
font_01_sfnt_off0000d932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD932 10624 bytes
SHA-256: f81fb84019cb1bf8c15260391ad521a82d2db23b305adcf13830cea238074dd5

Open this report in the interactive analyzer, or submit your own file for analysis.