Malicious PDF — malware analysis report

Static analysis result for SHA-256 49dbf0a54af4971c…

MALICIOUS

PDF

66.9 KB Created: 2020-11-28 07:08:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 64196e8a853c259f6a31290dfc510924 SHA-1: 12daed833a76e13a5d15866f5d9511dd0ea1fcf6 SHA-256: 49dbf0a54af4971c7c67150515918bf0b5163c9d36fa8785045dec6c5411d919
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to harmful content. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the presence of a malicious URL is sufficient to classify this as a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/wb?keyword=mahabharat%20dropadi%20cheer%20haran%20full%20video In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369629/normal_5f8883522371e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414691/normal_5fb350857579f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369501/normal_5f88762a74dc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372972/normal_5f8a0d8a5796e.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/jamokaroxoj/27499119135.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/barns_courtney_fire.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/scream_2_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/33026715037.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/captive_2015_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9d2f5f6-3d0a-4b6a-a118-4765b78fb5da/skeletal_system_crossword_puzzle_ans.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/world_of_warships_crosshair_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/98905203767.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/kurio_watch_app_for_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/pitobekolezof.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_off0000c9a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9A0 5272 bytes
SHA-256: 28e8c059e89a1fa25bdfb67cd068b99a4069cd433b4bb717e79ad55a260d881c
font_01_sfnt_off0000db92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB92 10356 bytes
SHA-256: d424bf742b6d8348d62a72c242afe5e82a5e02e96f8c6087f9ceba4386b813c7

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