Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbb0e7d8bbe0bf16…

MALICIOUS

PDF

71.2 KB Created: 2021-02-12 20:56:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 4b8b6d02de420f99c32a387fcf5c08b3 SHA-1: 34b03732ec0775371642975ffa9489ece4ccd5c6 SHA-256: bbb0e7d8bbe0bf16b9540f60ff578ca7884aca63479164b412e3dac611a07c99
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and is identified as a link farm on disposable hosting, suggesting a phishing or redirection scheme. The document body, though heavily obfuscated, appears to be a lure related to 'Toyota forklift service manual', likely to entice users to click on the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://leonvi.ru/wix?keyword=toyota+forklift+service+manual PDF link annotation
    • https://seruborakumew.weebly.com/uploads/1/3/4/8/134849990/xipotovanurekow.pdfIn PDF document text
    • http://laxeded.iblogger.org/12565330637.pdfIn PDF document text
    • http://kexagatedonekun.iblogger.org/60991140073.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485435/normal_6013a2c5bd44d.pdfIn PDF document text
    • https://guditeni.weebly.com/uploads/1/3/4/5/134529862/93d80d3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504922/normal_5fdc032a40c40.pdfIn PDF document text
    • http://berkeciftci.net/bajo_el_sol_de_toscana_gratispx18x.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tugefewose.rf.gd/867878903.pdfIn PDF document text
    • http://powulizadej.epizy.com/fetibuvebelafub.pdfIn PDF document text
    • http://mekamaxabojumoz.epizy.com/chrome_browser_for_samsung_smart_tv.pdfIn PDF document text
    • http://vatimofaxemog.rf.gd/92747200508.pdfIn PDF document text
    • http://kiwozoma.epizy.com/bachelor_of_engineering_in_information_technology_subjects.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_off0000dbe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE5 5204 bytes
SHA-256: 8fed71a3e25716c8926c18bd1ebbc93b3171992c3a754219eda418e61ec04e40
font_01_sfnt_off0000ed99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED99 10196 bytes
SHA-256: 7fce7269429c648774d8fb54d8532065728f2ec0524c6a1a50d5710e247ebf97

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