Malicious PDF — malware analysis report

Static analysis result for SHA-256 72fe98abd9555572…

MALICIOUS

PDF

70.6 KB Created: 2021-02-12 11:40:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 04e06af300d4fc9643078d2673b18dd6 SHA-1: 8d7a06533d3eb0405ea420c408bf69d72bcdb4f2 SHA-256: 72fe98abd9555572551917ce2c5f901e13a7a77c1a2d3e0980311c1e6a3a0116
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content or download further payloads. The presence of external URIs and the 'link farm' heuristic strongly suggest an attempt to lead the user to external, potentially malicious, resources.

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
  • 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.
  • 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://maypoin.ru/wb?keyword=2014%20dodge%20charger%20service%20manual PDF link annotation
    • http://elinekici.online/rovovice0dk.pdfIn PDF document text
    • https://sitimewodojex.weebly.com/uploads/1/3/1/8/131856527/fasipesexetuba-tezegefodulopu.pdfIn PDF document text
    • http://mishabelle.ru/228017556153xz61.pdfIn PDF document text
    • http://domavera.ru/87652083830mz905.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392218/normal_5fd1bad0bacc0.pdfIn PDF document text
    • https://cdn.sqhk.co/xadowififux/dZ6ahae/55408580448.pdfIn PDF document text
    • http://ranomurivokav.22web.org/sudelojorenujapasideron.pdfIn PDF document text
    • https://cdn.sqhk.co/kufejeni/T920fJv/60038456966.pdfIn PDF document text
    • https://tegipogelow.weebly.com/uploads/1/3/1/4/131407588/7765769.pdfIn PDF document text
    • https://cdn.sqhk.co/juvowisire/jh2gfG7/disorder_definition_science.pdfIn PDF document text
    • https://cdn.sqhk.co/lexoxuxoluvi/gighiXm/chicken_invaders_3_multiplayer_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388037/normal_6012e2099601f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nagikesedogoru.rf.gd/employee_exit_interview_template_word.pdfIn PDF document text
    • http://dixitexajujus.epizy.com/bar_stool_heights_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/black_operations_2_hile_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/kugugojalovaxufadobimo.pdfIn PDF document text
    • http://mujozitovisiwud.rf.gd/26499268145.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/samanunejenesod.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/27133741534.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_off0000d595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD595 5732 bytes
SHA-256: 63e45b33f87fe3856b4d8d6b9147b2c026f5edac13e4efed383b27dab6469bf5
font_01_sfnt_off0000e8fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FE 10680 bytes
SHA-256: ba37dcbeb714901494efea1545db1181557513add0478fa79804eb7d7ca26d03

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