Malicious PDF — malware analysis report

Static analysis result for SHA-256 894573518f0f8610…

MALICIOUS

PDF

74.2 KB Created: 2021-03-03 17:24:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a160ca19f5737971b079fd5795ae7225 SHA-1: ba85a34a9d5a3e6eb3e98676252e22bce57ba9c4 SHA-256: 894573518f0f861044c0a0b935b27ec2be063a0f9c9102905cc03cdb8017e475
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links pointing to disposable domains, indicating a phishing or redirection attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to lead users to malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a common phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/strik?utm_term=las+flores+del+mal+poemas+cortos In PDF document text
    • https://sazadasixitabe.weebly.com/uploads/1/3/4/4/134404720/beredufeviputefog.pdfIn PDF document text
    • http://antonioit.fun/age_of_empires_2_steam_mac_osbif4u.pdfIn PDF document text
    • http://detonic-de.website/alcohol_withdrawal_scoregd7vy.pdfIn PDF document text
    • http://jijagaditax.iblogger.org/predictive_analytics_examples_in_manufacturing.pdfIn PDF document text
    • http://limons.space/color_splash_photo_editor_apk7b629.pdfIn PDF document text
    • http://avlto.best/50728799153uzqh9.pdfIn PDF document text
    • http://baby-slings.ru/88135390053wfcau.pdfIn PDF document text
    • http://jirenaxapibetig.scienceontheweb.net/a_voyage_long_and_strange_prezi.pdfIn PDF document text
    • http://regvoolkim.website/tazemovonuzigelupuzasesi9m6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nowuzapifara.rf.gd/73881837523.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_off0000e406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE406 5240 bytes
SHA-256: 34f985acf294279b59fbd80b56c2880dc1f25990012354246186295bf32a1a2e
font_01_sfnt_off0000f5c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C6 11424 bytes
SHA-256: 302174ab54af8f63347af6b5d41d3a9b85222a3adf74a40775078026d2a9402c

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