Malicious PDF — malware analysis report

Static analysis result for SHA-256 175b4e4bbe76e6c6…

MALICIOUS

PDF

72.3 KB Created: 2021-03-04 05:04:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 549825591e5ff069987e231d0b512321 SHA-1: de02164aebe9e49d9f21f094bfd57c83ddd46c36 SHA-256: 175b4e4bbe76e6c6b5dd6b31f5d5c55a1f1be78c3a16740c40ff867b8cf47705
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://vilenefex.ru/wix?keyword=pesticide+applicator+training+manual+ct PDF link annotation
    • https://vejugowe.weebly.com/uploads/1/3/4/5/134506523/lemezewusige.pdfIn PDF document text
    • http://madewithsunshine.com/22246754997rlrc5.pdfIn PDF document text
    • http://raisinslabs.club/petty_cash_letter_formatsa1i6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467912/normal_600ace6591482.pdfIn PDF document text
    • https://zujanotoze.weebly.com/uploads/1/3/4/4/134476942/gitiguri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487386/normal_601b2c12569d2.pdfIn PDF document text
    • http://zoomita.space/78269870510oj1tb.pdfIn PDF document text
    • http://scrlt.xyz/bhagavad_gita_in_kannada_download3x8go.pdfIn PDF document text
    • http://onlineeshop24.xyz/16911893508ruyyt.pdfIn PDF document text
    • https://fobedixosofano.weebly.com/uploads/1/3/4/3/134377241/1843749.pdfIn PDF document text
    • http://vekvelo.ru/what_should_i_check_when_buying_a_new_car2vvvd.pdfIn PDF document text
    • https://xomaribimufad.weebly.com/uploads/1/3/1/1/131163516/1998833.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374022/normal_603f231693964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412164/normal_602b486671cdf.pdfIn PDF document text
    • http://bogplaktnc.fun/37352221148fd5c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388178/normal_5fe9d375a08a2.pdfIn PDF document text
    • http://stepka2016.xyz/242003572962c6er.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sajomapujozokux.onlinewebshop.net/matemtica_financiera_inters_simple_ejercicios_resueltos.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_off0000dd60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD60 5392 bytes
SHA-256: f3453a3f69f0be36ad72916e9d7c7cdfe04d05bdf7240e5e413846161c8052ad
font_01_sfnt_off0000efa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA3 10956 bytes
SHA-256: 1e0824257797226171cc80a2e9913db14f2455beebd2b7c3016f5ba5f318b5b6

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