Malicious PDF — malware analysis report

Static analysis result for SHA-256 c695040d9fc7f26a…

MALICIOUS

PDF

82.0 KB Created: 2021-03-29 23:27:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b0d7bb9326dfdf7b8cf80bb42f472a9c SHA-1: 9c9bc7eca109ae797bf0ab78c13568a7e312e7ce SHA-256: c695040d9fc7f26a4268cf80500fe56ce112a7292b5505460f76568a5ae69db5
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 0.9996

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/123?utm_term=alejo+carpentier+the+lost+steps+pdf PDF link annotation
    • https://cdn.sqhk.co/vitimosugu/XjhjiHu/football_penalty_kick_games.pdfIn PDF document text
    • https://cdn.sqhk.co/fobonelaga/bwjhvji/snapseed_para_pc_windows_7.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/Ygiigjd/shell_racing_shirt.pdfIn PDF document text
    • http://pepojen.iblogger.org/bosasit.pdfIn PDF document text
    • http://zofazosedam.iblogger.org/clustertruck_free_no.pdfIn PDF document text
    • https://cdn.sqhk.co/lukumuzu/Kiajfjg/nupaxikefugu.pdfIn PDF document text
    • https://cdn.sqhk.co/fisoxinizo/gjhiSSP/amc_movies_2020_november.pdfIn 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/cc6eb9ea-32dd-464e-a1f3-6910cebdd826/rainbow_rowell_carry_on_hardback.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/railway_admit_card_kaise_kare.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/75130953888.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a5f20ff-4425-4d49-aa61-c7381c2908bd/the_bible_the_living_word_of_god_biblical_scavenger_hunt_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba0133a1-8526-4e08-ad0e-6c0a5f8f6332/the_elaborate_entrance_of_chad_deity_full_play.pdfIn PDF document text
    • http://puduvasogedima.rf.gd/87926347065.pdfIn PDF document text
    • http://medemamonolusav.rf.gd/81326799897.pdfIn PDF document text
    • http://vopawolug.epizy.com/kuzawexefinulafopurivapin.pdfIn PDF document text
    • http://xaxebunabu.epizy.com/71050231015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb6a5d00-299a-4fd0-9b9d-38fef3530924/dalobazopelunolibineleti.pdfIn PDF document text
    • http://miruwofewap.rf.gd/42974722346.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b152c8b6-2de6-4071-af6c-6d50f48c4809/48592103674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84001c3f-60a1-46f1-b184-98411fa9e25d/raduzimimogokum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3a3e23a-e02f-47a7-81a1-08888022390a/82834817997.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/24_hour_time_worksheets_year_5.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_off00010442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10442 5308 bytes
SHA-256: 67e7294b2ad221d14632c711c277a287c5e75ae080060eafe742b0cd5f3ef4d0
font_01_sfnt_off00011650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11650 10832 bytes
SHA-256: 2852bbec90020a3ef8ea33b72c7f356bed6d8d0f8adc11f1a697d92dfbf41688

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