Malicious PDF — malware analysis report

Static analysis result for SHA-256 59426eb9662781fc…

MALICIOUS

PDF

80.0 KB Created: 2021-04-03 07:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 54083aca1cdc479fd4cf130a2170df4c SHA-1: 582fba704d214e25866673b77944a296344e080c SHA-256: 59426eb9662781fc780a7e3cbe35df645d76a8dd1762795f5fae202e180a6240
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/award?keyword=adobe+pdf+pack+su PDF link annotation
    • http://doweryklkq.space/roseola_virus_symptoms_in_adults24tes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469106/normal_605c0379c935e.pdfIn PDF document text
    • https://defelidiko.weebly.com/uploads/1/3/1/0/131070982/d9de0438f.pdfIn PDF document text
    • http://datab.vip/mort_terry_pratchett_audiobook19j60.pdfIn PDF document text
    • http://juwaniwabi.medianewsonline.com/kamuvalewunexuzowogeb.pdfIn PDF document text
    • http://omynutural.space/84357639704t2vl0.pdfIn PDF document text
    • http://nipijapogila.sportsontheweb.net/37921580460.pdfIn PDF document text
    • https://fuwanitawoge.weebly.com/uploads/1/3/4/4/134436239/seluzirixus_bepabez_kabutilojegini.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422645/normal_60276993746e8.pdfIn PDF document text
    • http://vitofemegawe.getenjoyment.net/jisukuxobewazavalovoju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473432/normal_6007ad1651523.pdfIn PDF document text
    • https://bopojebokup.weebly.com/uploads/1/3/1/4/131408204/5446654.pdfIn PDF document text
    • https://mifanalukuzesu.weebly.com/uploads/1/3/4/6/134688284/722711.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489977/normal_604d2445e3a93.pdfIn PDF document text
    • http://osummer.space/diversity_and_inclusion_mission_statement_examples0rrvj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402481/normal_601d772e914a6.pdfIn PDF document text
    • https://tivepikilusu.weebly.com/uploads/1/3/4/7/134759048/f7993deee7e9.pdfIn PDF document text
    • http://surozofawowidom.scienceontheweb.net/bioclimatic_design.pdfIn PDF document text
    • https://zerivomixiloz.weebly.com/uploads/1/3/4/6/134664353/487915.pdfIn PDF document text
    • http://gallery-shop.site/turnover_ratio_managerial_accounting5sgvz.pdfIn PDF document text
    • https://pinowutofabu.weebly.com/uploads/1/3/4/7/134763632/wifamuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pimobepetokonud.myartsonline.com/95825632698.pdfIn PDF document text
    • http://ligekasuxube.onlinewebshop.net/93000660492.pdfIn PDF document text
    • http://bipegokatif.onlinewebshop.net/pdf_to_coreldraw_converter_online_free_download.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f99b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF99B 5216 bytes
SHA-256: eb10a2e22df21214704548013513f99b30ab1d93256203f5298af2ffda5d03df
font_01_sfnt_off00010b72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B72 10996 bytes
SHA-256: 6670853d4424458958668ff1749891d063ebbef6170b7ad80cf59e79e2bdbaea

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