PDF malware analysis — malicious · 5abb50c7b597e9fb

MALICIOUS

PDF

72.8 KB Created: 2021-01-01 03:10:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 647cfbff2c1e0b80a29e4de6e3c686ef SHA-1: e64a542b1e66624bd6cd39b34aa029f24bbfa854 SHA-256: 5abb50c7b597e9fb52904b336e995c91aebc97bb0226d56450392a0c63d14313

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 a phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although the document body is heavily obfuscated, the presence of a malicious URL is a clear indicator of an attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9975

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
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/123?utm_term=ball+bouncing+dynamics+problem In PDF document text
- https://cdn.sqhk.co/mewuwemiromi/XAShbhf/66851912244.pdfIn PDF document text
- https://cdn.sqhk.co/dediwifime/jheijib/super_mario_kart_game_nintendo_switch.pdfIn PDF document text
- https://cdn.sqhk.co/sigidezok/eighfhc/12523142505.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/risalenefazozo/xuxizolajigurim.pdfIn PDF document text
- https://s3.amazonaws.com/leguvefu/powerpoint_presentation_topics_for_school_students.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5c513c5f-6426-4f66-8219-f2c36ba8e4c0/27728783746.pdfIn PDF document text
- https://s3.amazonaws.com/vajefam/database_interview_questions_and_answers_indiabix.pdfIn PDF document text
- https://s3.amazonaws.com/vatosolikijike/3218242609.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9bd04921-6a4a-4a1b-a315-e19cd4573440/underworld_3_full_movie_in_hindi_download_300mb.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e039.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE039	5684 bytes
SHA-256: `2d76b7302643ce9017097a07f6d4049a60f58f071b73aab6981d7cba6bca90f0`
`font_01_sfnt_off0000f376.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF376	10348 bytes
SHA-256: `b11d8bb487f766c50c1e1ef3fb028c338b907b4cede9e6ad8ca0b293f743fa48`

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