Malicious PDF — malware analysis report

Static analysis result for SHA-256 c430bc40002ceeef…

MALICIOUS

PDF

82.4 KB Created: 2021-03-04 07:02:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: ae9b2ef354f07c90a180be18343faa96 SHA-1: 5f47c411db10821ce9fa03ee007e149fcbe05f25 SHA-256: c430bc40002ceeefa3694621f4d8becbe0b7190f21db82423781fc886836906a
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • 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://ponafet.ru/strik?utm_term=kenmore+elite+81714+canister+vacuum.+bags PDF link annotation
    • https://cdn.sqhk.co/lazimafuxuxi/zhciagg/81534368421.pdfIn PDF document text
    • http://pasetbs.xyz/13609225350xkzqw.pdfIn PDF document text
    • https://mumotajesok.weebly.com/uploads/1/3/0/7/130738730/sinijojumuxum_vejel.pdfIn PDF document text
    • https://minajekefejuwow.weebly.com/uploads/1/3/0/7/130776819/zaros.pdfIn PDF document text
    • https://lorotorerusut.weebly.com/uploads/1/3/1/4/131452969/sudabiwataru_kabevubika.pdfIn PDF document text
    • https://risimapi.weebly.com/uploads/1/3/4/3/134321435/850253.pdfIn PDF document text
    • https://xiridibokolu.weebly.com/uploads/1/3/1/3/131379099/6631188.pdfIn PDF document text
    • https://gusobenatidisa.weebly.com/uploads/1/3/4/4/134475091/8700537b6.pdfIn PDF document text
    • https://cdn.sqhk.co/porekige/mhhzria/39178965120.pdfIn PDF document text
    • https://cdn.sqhk.co/sitopizol/jic8saU/celebrity_voice_changer_free_online.pdfIn PDF document text
    • http://esclub.pro/filme_romanesti_vechi_cu_razboi4yflf.pdfIn PDF document text
    • https://cdn.sqhk.co/xefijumu/Iiggdhc/big_win_jelly_mod_apk_download.pdfIn PDF document text
    • http://qqkaxes.xyz/el_seor_de_las_moscas_personajes_secundariosnnohz.pdfIn PDF document text
    • https://voloxamofe.weebly.com/uploads/1/3/0/8/130874475/zimefazipizepigefek.pdfIn PDF document text
    • https://cdn.sqhk.co/zixifazod/AjaWYLN/paint_sprayer_reviews.pdfIn PDF document text
    • http://ighelpcenter.xyz/balanced_diet_information4eml4.pdfIn PDF document text
    • https://cdn.sqhk.co/mewoveri/iavyojd/united_states_zoochat.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/vovopafubipu/kivufexemobararez.pdfIn PDF document text
    • https://s3.amazonaws.com/dazawojob/47213752056.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/bruker_axs_d8_advance_manual.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_off000105b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105B6 5736 bytes
SHA-256: eaf510f5260df0f3ece8467db78cabf9cdd04179e435a6a7111f653591942788
font_01_sfnt_off00011942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11942 10152 bytes
SHA-256: 6588e6b45c4a8d813c58022ca2d80eea215d2973e406f567d0f8a260fefbadfa

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