Malicious PDF — malware analysis report

Static analysis result for SHA-256 09abdcfad8138513…

MALICIOUS

PDF

85.5 KB Created: 2021-03-09 01:55:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9b72f188023613b8d781698c4fe77876 SHA-1: aba270caf2e2bd37932c5dce5e82dd9f93083488 SHA-256: 09abdcfad8138513f473d8e04284d254cf75f0e30521c0e8c6b4c463d4bb5052
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a large number of external links, forming a link farm, with one prominent URL pointing to 'soxebez.ru'. The document's structure and the presence of numerous links suggest an attempt to manipulate search engine results or redirect users to potentially harmful content. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • 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.
  • 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://soxebez.ru/wix?keyword=giant+steps+transcription+trumpet PDF link annotation
    • http://artdebug.site/the_accused_full_movie_hdykxbk.pdfIn PDF document text
    • http://mifvideo.space/whirlpool_wrf560seym05_manuall5nhc.pdfIn PDF document text
    • https://penixosifa.weebly.com/uploads/1/3/1/4/131482878/07ecfcf10.pdfIn PDF document text
    • http://kayikciakademi.com/zudenofijugofagzeng.pdfIn PDF document text
    • http://keepmaxi.space/sosumiz20rsh.pdfIn PDF document text
    • http://hookup158.fun/free_avery_label_template_83661ookh.pdfIn PDF document text
    • https://zebilukirun.weebly.com/uploads/1/3/5/3/135306511/72580c3.pdfIn PDF document text
    • https:///www.youtube.com/watchIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/98d293aa-2420-42c6-9326-86e6dd3c43fd/loxededimesofusetavimo.pdfIn PDF document text
    • http://tepuxasimu.rf.gd/pod_xt_live_problemas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb373531-a750-4a4d-949e-7d8b3e4df219/can_clogged_milk_ducts_go_away_on_their_own.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e9f4a97-7e3f-496a-94ee-05cab040edc9/speed_queen_dryer_parts_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/xuvimizawojezenu.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/deselect_sheets_in_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/wakoxadafejuxudukokudap.pdfIn PDF document text
    • http://wupebixa.epizy.com/64642644712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47762d8b-3c72-4a7b-8b3b-52f5bd550077/what_did_bruno_do_to_shmuel_at_the_end_of_chapter_19_that_was_out_of_character_for_him.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/45495191005.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd339333-ee3c-4420-9fc5-0a3361b71051/lonumad.pdfIn PDF document text
    • http://nijopupeboxisa.epizy.com/conductance_in_chemistry.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/gulepipi.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/fafusimumilixodewevij.pdfIn PDF document text
    • http://notilud.epizy.com/98552685797.pdfIn PDF document text
    • http://wixudilasajigil.rf.gd/23236037424.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/15791318769.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE4 5080 bytes
SHA-256: cdb0cd768fffaf7d21d479254a428e7799c9659f5d99e67df0d17544bd63625c
font_01_sfnt_off0000fc19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC19 16668 bytes
SHA-256: ab384de56f46e325646bd36ed1a59495895b4d7f189abfce8c24c41d6b58a75d
font_02_sfnt_off0001305b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1305B 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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