Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d05aa236774efce…

MALICIOUS

PDF

72.1 KB Created: 2020-11-13 22:58:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 42d25251dac06ba065576c671e179a1d SHA-1: e5b7078848d3c3b89a6d2fe79c1a230557ba23c5 SHA-256: 9d05aa236774efce62390407917dae23e25402bb87d5440de51e8fe138e3d370
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. Another heuristic indicates a link farm designed to host numerous external PDF documents. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=dear+evan+hansen+bootleg+google+drive In PDF document text
    • https://cdn-cms.f-static.net/uploads/4418575/normal_5fadd361d1a32.pdfIn PDF document text
    • https://puvemeximaz.weebly.com/uploads/1/3/4/4/134442093/6950132.pdfIn PDF document text
    • https://puvemeximaz.weebly.com/uploads/1/3/4/4/134442093/lisaxezemo-lamenimenodigi-sesagidopidimud-muduvu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393785/normal_5f9c44a1e6d20.pdfIn PDF document text
    • https://kulirudezu.weebly.com/uploads/1/3/4/5/134583820/a52f8dc14a7c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/joanna_s_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b635fdc9-098c-478c-a91b-4d4de5f57f0a/bagubojazezikif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dc5e18b-9402-44b3-8a41-de6642c390bc/kenmore_elite_he4t_washer_parts_diag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9b3c8c8-0221-4dae-bb72-1b53c7d9ed7f/66136741770.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/knight_fighting_dragon_meme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39f7977a-7721-4571-af62-1ec278a083bb/24169206939.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b4a254f-fa32-4924-806c-fd5e780248a5/subanalip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88cf5077-e033-4422-a491-eea7b35773ff/56698322273.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b84a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB84A 5284 bytes
SHA-256: 39898ec6a7041a1cce40e5341f8597997f951206a2708e2c33dde23e19a69cb8
font_01_sfnt_off0000ca3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA3B 12924 bytes
SHA-256: 70158500579b69d5550be5e237a53a7865d3ab9c2b424ebdd084756cdf79a20d
font_02_sfnt_off0000ee7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7E 10732 bytes
SHA-256: 61213d3b9e269686dada114d6f7eea240e9f65fb8c77c3a31b38d91ba7fe1b59

Open this report in the interactive analyzer, or submit your own file for analysis.