Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb6dfd5ed8a50213…

MALICIOUS

PDF

78.1 KB Created: 2021-02-17 02:27:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 574321b938a0ba5fbb6c176f550e7f56 SHA-1: 866f6c7302757ec5e949915bd2f1f35d688c2adb SHA-256: bb6dfd5ed8a502133c4ebe85cf021c7f5c201b725e1f95e81bb6f404156b90b0
126 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and is flagged by multiple heuristics, including ML and ClamAV, as malicious. The document body, though heavily obfuscated, suggests a lure related to a 'John Deere 7000 planter service manual'. The presence of numerous external URIs, many on disposable hosting, indicates a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure itself is used to facilitate the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/123?utm_term=john+deere+7000+planter+service+manual PDF link annotation
    • https://cdn.sqhk.co/difigobon/LhfJhcL/oceanhorn_2_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/gijesali/zzvjfhe/top_10_music_charts_us.pdfIn PDF document text
    • http://milansit.space/the_crown_season_2_episode_6_fact_checkh7w8k.pdfIn PDF document text
    • http://iwhite.space/rifoxagadojopisowojetemuoepm6.pdfIn PDF document text
    • https://cdn.sqhk.co/mojikeke/6kidieM/davaxago.pdfIn PDF document text
    • http://zesamoa.online/vishnu_sahasranamam_hindi_mainba68.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469116/normal_5ff776310d453.pdfIn PDF document text
    • http://medyayazilimtr.com/lutimumod5m120.pdfIn PDF document text
    • http://lightly.store/chickie_and_pete_s_nutrition_guidejo9et.pdfIn PDF document text
    • https://cdn.sqhk.co/dazenolaxuj/ahiPiaY/22564465675.pdfIn PDF document text
    • http://helpforteam.com/79157979807darq3.pdfIn PDF document text
    • http://stat-index-co.com/21862917059ptv6z.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/ibXicWk/space_agency_2138_game_help.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vexosafugunu/fun_guide_toronto_swimming.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E0 5464 bytes
SHA-256: 4c1c979f096aa5d4bf7ea0ff2bd0ee9583d418afe3d6d1def0599be3ead54ff6
font_01_sfnt_off0000f848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF848 10736 bytes
SHA-256: ce0550d88f82de96b5a1a5161b5457014bf43bc65aae3e44a42967bd1a3fa9f4
font_02_sfnt_off00011cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CFE 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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