Malicious PDF — malware analysis report

Static analysis result for SHA-256 16f6bcb154060398…

MALICIOUS

PDF

73.8 KB Created: 2021-03-18 20:03:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a7dbf21268bb945f105d4e31b6a87dbc SHA-1: fabcb341b8b746e35ee6118e893a8ffe5ec274c1 SHA-256: 16f6bcb154060398b627a93551450bfcd68ef51116c60f81775b86a1c411ee5b
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 0.9991

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
  • 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://kuzutuzo.ru/strik?utm_term=how+to+drain+frigidaire+deep+freezer PDF link annotation
    • https://cdn.sqhk.co/savaketiju/SXqgIge/67401735194.pdfIn PDF document text
    • https://cdn.sqhk.co/remowiwa/hg5jagf/gallery_of_guns_ruger_precision_rifle.pdfIn PDF document text
    • http://difipalilif.scienceontheweb.net/abbott_architect_test_menu.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeforms.com/harry_potter_hogwarts_acceptance_letter_template2kzx4.pdfIn PDF document text
    • https://cdn.sqhk.co/xamapetarel/ibhehiV/remix_music_song_joker_full_dj_2019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384819/normal_5feba7ba341b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388160/normal_5ff06a0b32b8c.pdfIn PDF document text
    • http://creamwalls.online/android_device_manager_6._0_apk043rf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388405/normal_602103c679e3f.pdfIn PDF document text
    • http://getyourscore.info/what_is_free_oxygenohshj.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/who_is_veronica_roths_agent.pdfIn PDF document text
    • http://digtalcaliper09.xyz/how_to_hook_up_rca_soundbar_to_element_tv6munx.pdfIn PDF document text
    • http://zavudonalu.66ghz.com/basshunter_all_songs_free.pdfIn PDF document text
    • http://tekupabo.iblogger.org/sims_4_labor_cheat.pdfIn PDF document text
    • http://abistrans.ru/tixawuzadoderonefidilonolx98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475217/normal_5ff689ca5303a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/best_2_person_soccer_drills.pdfIn PDF document text
    • http://bogazukutij.rf.gd/44306132690.pdfIn PDF document text
    • http://kerexiref.onlinewebshop.net/democracia_liberal_concepto.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/vexanurejap.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/80318571934.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/cambridge_11_test_3_reading_answers.pdfIn PDF document text
    • http://webakipi.epizy.com/70032100090.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/46793182324.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_off0000e1e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E0 5104 bytes
SHA-256: f5192a75036200b38c02abce65b2d2261492831de629b748bf256348d64b9c93
font_01_sfnt_off0000f36e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF36E 10700 bytes
SHA-256: 17834793e92c77967a6aecb15425bf96db4da199ad4b59e894d04084104cea47

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