Malicious PDF — malware analysis report

Static analysis result for SHA-256 07a7be94fc95677d…

MALICIOUS

PDF

68.8 KB Created: 2020-11-10 18:35:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fd77323d8eec1d7633a20c2df1f8a41e SHA-1: 9818956fae9772231b62c30631398ff17f5ca803 SHA-256: 07a7be94fc95677d50e6b7311d916528891f1afbe1f43501da011e90b684bb1e
96 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. It contains an embedded URL that directs users to a suspicious domain, likely for a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffe.ru/123?keyword=generals+field+desk+plans PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401505/normal_5f95a7e90a8b8.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/dowavelaxam/fovotomen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69f15cc1-3c70-484d-b7ee-567b549796d1/how_to_tell_if_your_engine_coolant_temperature_sensor_is_bad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f45b5792-dcd5-4dee-b187-990333e93502/kegorisodejetajunukopamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bc973fc-6718-4798-b23f-70c06e9d7a1c/76388749341.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e443371-05f1-411d-b464-77851dd234f8/9526288545.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db0f86fb-b122-4ac6-acd8-996d090e78e1/retuxudokurowobimalusozes.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/48823688801.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/41214633989.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/662d9798-6b7c-46db-a3a5-f956995c81e4/82026909684.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/jensen_je4015_led_tv_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/oxford_handbook_cardiology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c3a12c0-dc03-4ff3-8bbb-6698ef2cca79/76603151414.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_off0000d223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD223 5132 bytes
SHA-256: 7cc038f52f4686673b817b891a4491c11bc26b16c470ccdfc0753bcf9aaeb5b9
font_01_sfnt_off0000e3aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AA 10136 bytes
SHA-256: f8948723b194f07b41d7565b962c2e119c4bb3187b37d7a80faca414194adc60