Malicious PDF — malware analysis report

Static analysis result for SHA-256 64954dc68a4ee5d9…

MALICIOUS

PDF

82.8 KB Created: 2021-04-06 05:23:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac4d263256976b22ef67ada90d482da0 SHA-1: 389ce54b2023f38f3661744963345e8ba026a847 SHA-256: 64954dc68a4ee5d91ed646340e334c4a215de26344f24b4b2572f0f124d7014d
156 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a link farm, suggesting a phishing or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing lure, likely leading to further malicious content or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/strik?utm_term=nikon+dx+cameras+list
    • https://jotelozaji.weebly.com/uploads/1/3/4/4/134484012/rutufujer.pdf
    • https://wadozivapo.weebly.com/uploads/1/3/4/5/134512268/446968860.pdf
    • https://dozetiwe.weebly.com/uploads/1/3/1/8/131856451/bizalotitiwu.pdf
    • https://faxojoduso.weebly.com/uploads/1/3/5/3/135351685/5c435fdfe.pdf
    • https://cdn.sqhk.co/bedipidis/jdiigey/25245995800.pdf
    • https://cdn.sqhk.co/rolileduvof/wRifjjz/warfarin_guideline_australia.pdf
    • https://cdn.sqhk.co/neliwuwo/ibuJF2T/68462198139.pdf
    • http://silokegawup.iblogger.org/resume_references_template.pdf
    • https://ragajepegoxi.weebly.com/uploads/1/3/1/3/131379061/5848463.pdf
    • https://cdn.sqhk.co/jogeguzotire/hS82vif/guess_the_emoji_movie_level_11.pdf
    • https://cdn.sqhk.co/dukoredod/aghk7hh/walimivi.pdf
    • https://cdn.sqhk.co/ritapabinap/carifhf/63654856900.pdf
    • https://lepatoketi.weebly.com/uploads/1/3/4/7/134732542/496e0c9ce.pdf
    • https://nusoselif.weebly.com/uploads/1/3/4/4/134470887/dedipeluziguwilu.pdf
    • https://tewijudejasivi.weebly.com/uploads/1/3/2/6/132682467/mobas.pdf
    • https://cdn.sqhk.co/giganopof/2py5u2L/poladovizanejaditefax.pdf
    • https://cdn.sqhk.co/kirorakoxu/idS5Ul1/65581921967.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://zuruxiwowasigu.epizy.com/bermuda_triangle_in_urdu_download.pdf
    • http://zukisofom.epizy.com/back_number_happy_end_mv.pdf
    • http://maputixesikowi.epizy.com/sowigekofuza.pdf
    • http://xafafogaditeki.rf.gd/85223728040.pdf
    • http://tefixifurelo.epizy.com/99500446468.pdf
    • http://besidoxaz.rf.gd/laxumavipuveju.pdf
    • http://dadogabipot.rf.gd/bending_moment_in_a_beam_lab_report.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9fb.bin
27089b9393f33211c3c1193d38fd942ba885877dfdcd69f76005d49b373f4e40		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9FB 4972 bytes
font_01_sfnt_off00010abc.bin
8c2ed82e3a873091abc159130722ed0909a117b29a7fe486929ee8106941bc48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10ABC 10708 bytes
font_02_sfnt_off00012f97.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F97 4324 bytes

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