Malicious PDF — malware analysis report

Static analysis result for SHA-256 2408a6583dcea934…

MALICIOUS

PDF

78.2 KB Created: 2021-06-11 09:25:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b91af3a5e0215b7f5270f0d645add0f3 SHA-1: d50ae3d7540cd4a60a114b50bdd14b2ab13197e7 SHA-256: 2408a6583dcea934185bdca861f3c2d4992d8ac5f68f30b7e12e1e50d35884c7
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a URL that appears to be a lure for a movie download. This URL is likely used to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://catamma.ru/pbw?utm_term=kya+kool+hain+hum+3+full+movie+2016
    • https://cdn-cms.f-static.net/uploads/4486535/normal_6052a50206b0d.pdf
    • https://cdn-cms.f-static.net/uploads/4409616/normal_60c05538bf9a5.pdf
    • https://static.s123-cdn-static.com/uploads/4370286/normal_5fcc3ee36bc13.pdf
    • https://cdn-cms.f-static.net/uploads/4419198/normal_5fd77229588c7.pdf
    • https://cdn-cms.f-static.net/uploads/4381980/normal_6042fb9d6d942.pdf
    • https://cdn-cms.f-static.net/uploads/4477137/normal_5fe9479e1a3de.pdf
    • https://cdn-cms.f-static.net/uploads/4408352/normal_603c3595a94c1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/e8b13aa7-4e3c-4b4d-b5a9-565245ee5854/wedetumatofedifa.pdf
    • https://uploads.strikinglycdn.com/files/a3aefff5-6dd6-4570-894b-2531c6a9bdae/numotirazovo.pdf
    • https://uploads.strikinglycdn.com/files/38b55926-b9eb-4f02-93bc-ae92b30d2f8e/29375357336.pdf
    • https://uploads.strikinglycdn.com/files/10f2ece2-54d3-4edc-bc55-2db9743ff82e/how_to_replace_a_drive_belt_on_a_craftsman_mower.pdf
    • http://sujagajo.pbworks.com/f/84734760589.pdf
    • https://uploads.strikinglycdn.com/files/667f96e1-da21-465b-b41d-81b8b7710e9e/23850448106.pdf
    • http://jizakatum.pbworks.com/w/file/fetch/144498201/game_booster_speed_up_your_phone_apk.pdf
    • https://uploads.strikinglycdn.com/files/058239d1-4c12-4e9e-9341-80c9b66fc6b8/current_medical_diagnosis_and_treatment_2020_59th_edition.pdf
    • https://uploads.strikinglycdn.com/files/060cdcc9-2aae-4285-a73f-4894dd30b0b8/burogubu.pdf
    • http://vifogajo.pbworks.com/f/48825590339.pdf
    • https://uploads.strikinglycdn.com/files/00a6d808-f292-4864-a6ba-e612b5b6c3e4/vagezexonitesufo.pdf
    • https://uploads.strikinglycdn.com/files/21dd89b5-7c33-4cd3-a498-c11581bdd9a8/how_long_is_dbt_group_therapy.pdf
    • http://sulegiwi.pbworks.com/w/file/fetch/144683943/siluxoj.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e54f.bin
a0717dd8facd89d67b957907075ca860abf76b6362bc2e0ed569e6d9cf5821e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE54F 5372 bytes
font_01_sfnt_off0000f771.bin
d4c993e7378c9574802c00614260e21b4880d73ce8b1b71625b5a1f3f5d6029c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF771 11012 bytes
font_02_sfnt_off00011cdd.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CDD 4324 bytes

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