Malicious PDF — malware analysis report

Static analysis result for SHA-256 de2e67d953b46f86…

MALICIOUS

PDF

69.5 KB Created: 2020-12-16 13:35:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5326c4efb5d1d4b2046b6e187f4b1025 SHA-1: e5e2611c04f0090b2cf844d8f22f8f9edcbb1e0e SHA-256: de2e67d953b46f86b0bcf2d546cc5d01479aae88d6e154866ad74ca0ddd16c87
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of an external URI and the overall nature of the content suggest a phishing attempt disguised as a job application or template.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/aws?utm_term=character+letter+template+air+force PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412606/normal_5f9511290d784.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://static1.squarespace.com/static/5fc59b71c6229360ecccef93/t/5fd740e6c4373837b926e577/1607942375279/against_the_sun_movie_hd.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4b88bc819f1cf4ced15b/1606372233608/dirt_bike_hitch_carrier_hydraulic_jack_hauler.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dbf0116eb00e3c4bba69/t/5fc0ffff4e98326c0233f552/1606483968743/logic_and_conversation_1975.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a9b46a0-d31d-4a6e-a55e-d0a308316abc/susudakiloxokixurulur.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/44603096727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54540a08-ef35-46cd-97b1-50144f0dd424/keluligobaduresidiboviza.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd02e373299f0c543aa141/1606222564076/zabapumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42b1f2c9-8370-493d-a4d3-80ec6e78e4b9/73006451882.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5561eaf37e3b6492b631/1606374753592/dotuzedugubed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9de20346-71c1-48c6-9fcd-76c2068b0811/acc_testing_center_hours_northridge.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_off0000c63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC63D 4780 bytes
SHA-256: 36b37dc20db234c6442bb9b79f66f998a3fc8d2f03e14df4fb65dff0e4cc0880
font_01_sfnt_off0000d681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD681 10780 bytes
SHA-256: f544aaeba242bf2d3c1ba9a2320be9dec13f7e03393ce62f4feb8dba23c72f22
font_02_sfnt_off0000fb46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB46 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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