Malicious PDF — malware analysis report

Static analysis result for SHA-256 804b931ad6b772a9…

MALICIOUS

PDF

75.0 KB Created: 2021-05-14 19:39:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 99fcc8c5445618431406cdfd787905a3 SHA-1: 75c31ebcf7c69b927688dec5fe6c819b6f88c73b SHA-256: 804b931ad6b772a950f92e8d7be6efd711165684787561cabf65387b3fce029a
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 0.9992

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://jacksth.ru/strik?utm_term=kitchenaid+mixer+cover+pattern+with+pockets PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421466/normal_60583fab19197.pdfIn PDF document text
    • https://sufevibuxaka.weebly.com/uploads/1/3/2/7/132712301/folamisofag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375541/normal_5ff5ced64d27e.pdfIn PDF document text
    • https://wefikugozakilo.weebly.com/uploads/1/3/1/0/131069992/debbb596a16ac8.pdfIn PDF document text
    • https://cdn.sqhk.co/pagozixupezi/ififWjb/3519773116.pdfIn PDF document text
    • https://cdn.sqhk.co/noxibogalu/TGhgjb9/noselaguxutugam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386334/normal_6009f1a624253.pdfIn PDF document text
    • https://cdn.sqhk.co/vabolepibe/PYrijSq/autocad_2015_manual_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kokuxisa/ibhahcq/entergy_texas_power_outage_report.pdfIn PDF document text
    • https://wavoxodasamemat.weebly.com/uploads/1/3/5/3/135348105/sulozovuwilaz-penozuwowalaga.pdfIn PDF document text
    • https://cdn.sqhk.co/tebolugex/37fdibT/92162881725.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455174/normal_60082ac5d4b62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393635/normal_602fb610748df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449014/normal_5fc844e440a34.pdfIn PDF document text
    • https://pojirada.weebly.com/uploads/1/3/2/7/132741169/dironopa_puketelajedeveb_zijifedesuri_gebalozuxeneve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474478/normal_5fd16ff273b65.pdfIn PDF document text
    • http://zowixupuwufage.iblogger.org/super_usb_cassette_capture_software_mac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460241/normal_5feb1ab293d2f.pdfIn PDF document text
    • http://kiwikinixibiko.iblogger.org/23506311413.pdfIn PDF document text
    • https://jajixawu.weebly.com/uploads/1/3/5/9/135992574/1842676.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wogosozado.rf.gd/lujum.pdfIn PDF document text
    • http://dawivek.rf.gd/caesarean_section_rate_in_nigeria.pdfIn PDF document text
    • http://legofebufulemo.rf.gd/27743525800.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_off0000e4c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C0 5536 bytes
SHA-256: 24206de2d99c46efc0f7d2b60ae2c16ea100aa0cb671de82b161fb24ebeb0872
font_01_sfnt_off0000f77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF77C 10880 bytes
SHA-256: 544aae8bbd7e1d458739ec76dee60b382402f3e726798ec30978a11df5da2000

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