Malicious PDF — malware analysis report

Static analysis result for SHA-256 080d9cdac07f63c1…

MALICIOUS

PDF

70.7 KB Created: 2021-02-21 01:21:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 4415add9e52758b53a2c7dfd18d5a008 SHA-1: 18d596b18b8159cc358006a55354bfdb1210458b SHA-256: 080d9cdac07f63c13aa78bcb17bb16e8ef9038c060943f2b17c0acb928f8f674
116 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it contains external URIs and a callback phishing lure, suggesting it aims to trick users into contacting malicious actors. Although no scripts were explicitly extracted, the presence of embedded URLs and the phishing lure strongly indicate a malicious intent to deceive the user.

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://jottigo.ru/strik?utm_term=navy+advancement+quotas+september+2020 PDF link annotation
    • http://uabiomanix.xyz/eclipse_java_free_for_windows_10arfc8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411919/normal_6006bdf40fabd.pdfIn PDF document text
    • http://idealica-uficiale.website/minecraft_pe_11._0_apk_downloadykon0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481675/normal_5ff63b0d7cc00.pdfIn PDF document text
    • http://trylait.club/10554518842bhou7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465131/normal_5fdaab9c43b87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426260/normal_5ff6127be7395.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405907/normal_600774bd23e25.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://walefusariwe.epizy.com/muzizesamo.pdfIn PDF document text
    • http://lurilufe.epizy.com/9004863264.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/vixidepivesu.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_off0000d3e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E6 5856 bytes
SHA-256: d384ceb38af11e5cdfe184a9a1c5fcfccc7d118ad9b1dbb70726919b39c756a0
font_01_sfnt_off0000e7c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C8 11124 bytes
SHA-256: 672e20ec2961e87c5a2f77dcbafc89b65d4478473e095093c71dd0f91c69cfdc

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