Malicious PDF — malware analysis report

Static analysis result for SHA-256 69ccc6bbf073dd7a…

MALICIOUS

PDF

76.2 KB Created: 2021-04-08 03:41:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: c5449fc6ce7770b6b68ca858d8a76e7c SHA-1: 495bb819d821e0ec0ed22b05ad1a3fce51e1e1e3 SHA-256: 69ccc6bbf073dd7a4e1274ebd6bfe74c6c66b7a339d3017e3ff463ad19e30905
184 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics as malicious, including a critical finding for linking to known malicious redirector infrastructure. The document body contains garbled text but the presence of numerous links to disposable hosting suggests a phishing or malware distribution attempt. No scripts were extracted, but the overall structure and link analysis point to a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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://yafferge.ru/strik?utm_term=que+enfermedad+te+produce+moretones+en+el+cuerpo In PDF document text
    • http://hookup153.fun/peridium_game_explained3tbd8.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwasokeg/iiiZid9/6574816209.pdfIn PDF document text
    • http://c-advance.space/81180810587svwp0.pdfIn PDF document text
    • http://goldstein.capital/how_do_you_make_instant_mashed_potatoes8gogi.pdfIn PDF document text
    • http://formblckr1.xyz/67577120830ppwa3.pdfIn PDF document text
    • http://testertumentum.space/826824075671pnz9.pdfIn PDF document text
    • http://bokukot.22web.org/vocabulaire_juridique_franais_espagnol.pdfIn PDF document text
    • http://nibelv.xyz/the_measure_of_man_and_woman_dreyfuss5l3oy.pdfIn PDF document text
    • http://mavito.online/unpacking_common_core_math_standards_2nd_gradefv7er.pdfIn PDF document text
    • https://cdn.sqhk.co/wevafofed/agiPgjn/yalla_ludo_mod_apk_unlimited_diamonds_and_coins.pdfIn PDF document text
    • http://tryici.xyz/68741018735wfi7g.pdfIn PDF document text
    • http://spencermcman.us/tomodachi_collection_english_romlt0vy.pdfIn PDF document text
    • http://demask.space/adobe_audition_crack_32_bit676yk.pdfIn PDF document text
    • https://cdn.sqhk.co/mokabawimav/gjchjhe/bewozokuzuvivenex.pdfIn PDF document text
    • http://rijapefijap.22web.org/tasheel_e_bahishti_zewar.pdfIn PDF document text
    • https://cdn.sqhk.co/pulisamog/dpQhbja/thrift_stores_in_manhattan_kansas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://569961a5-e6b5-462d-8b38-7193d5e7b20b.filesusr.com/ugd/a37a2e_96cc26227b444db187818edac12567b0.pdf?index=trueIn PDF document text
    • https://be9ca920-c372-4566-b00d-544f92814f3b.filesusr.com/ugd/f0c5a9_3656c3cddb9140f8a33cdcd863867d84.pdf?index=trueIn PDF document text
    • https://4b4b92a8-4ac5-4030-97d5-af0917f8c077.filesusr.com/ugd/0251f0_aaa671d36f1e40c6b9ce73ef2b1f89eb.pdf?index=trueIn PDF document text
    • http://kinipojip.rf.gd/49417618975.pdfIn PDF document text
    • http://wazododasexixak.rf.gd/hp_laserjet_2100m_toner_cartridge_c3906a.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_off0000e9d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D3 5360 bytes
SHA-256: 62b5fb98227288e6ccddd60dfcf99a6e7d9dd2797e4afd71ad1d86ab0bac1e80
font_01_sfnt_off0000fbf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF4 11584 bytes
SHA-256: 660dd2c62a09e8e8a3c3589af6b2e219719d97bdffe1f5c9faa92a247d399aad

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