Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce9f1016112523d4…

MALICIOUS

PDF

66.9 KB Created: 2020-11-25 22:56:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0a3dd196ded8039c27b5eeec7f9b8d3d SHA-1: 064be6a6b3f872130a48216816a95ad078252f70 SHA-256: ce9f1016112523d456175638d71ef8ecff2ed9625dfd14a417dd25c86e1ee68e
116 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it contains an external URI and a phone number lure, characteristic of callback phishing or tech-support scams. While no scripts were explicitly extracted, the PDF structure and the presence of an external URL suggest it may attempt to download or redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffset.ru/strik?utm_term=dauphin+county+recorder+of+deeds+fees PDF link annotation
    • https://wevupifusa.weebly.com/uploads/1/3/4/3/134356286/3822842.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383302/normal_5f8efe41e15f0.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/delelides_dasexurekiwar_jajumab.pdfIn PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/1325453.pdfIn PDF document text
    • https://feloxoxux.weebly.com/uploads/1/3/4/0/134000485/fogetazox-rewiwinu-kuvosevaxanisif.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/tipikaxe/landscape_of_italy_wikipedia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ec89caf-cf64-4dd9-95c5-32f453909a7c/10282393316.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/681c1f16-0e48-4059-a043-82e64d6a67ea/extracurricular_activities_chester_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3720551-25d6-4ebe-aeb4-f2b803716e7d/rigala.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/sbi_new_atm_card_online_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/soil_type_of_the_coniferous_forest.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88ff3af8-d8d6-4b26-b921-982b506a7744/56396051698.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/gothic_3_combat_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/alien_vs_predator_psp_game_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d6c3dee-7bb0-4707-9a4a-70e25ffefc0c/lutumixopuxit.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_off0000c503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC503 5312 bytes
SHA-256: d048fc0ba33b86375a2c6f1dca235e1d68c42497182110522468d1db752852ee
font_01_sfnt_off0000d71c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD71C 12380 bytes
SHA-256: fa91f1d46bdc2c9982c03fac39d8b6240a9b6f168a951ecc37cecab479f0116f

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