Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6187e748c8f1962…

MALICIOUS

PDF

72.1 KB Created: 2021-03-19 23:00:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1c706353458ef2bfbbecc65aafd80064 SHA-1: 5efed05bce3e8767e825f38acabf54a847556950 SHA-256: d6187e748c8f1962b17e062021327af036fca2a6e9b6f5fce48e4384069088de
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 0.9996

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://dafemum.ru/wix?keyword=traductor+ingles+espa%25C3%25B1ol+textos PDF link annotation
    • http://bixekakazozerol.mywebcommunity.org/eureka_the_boss_power_plus_vacuum_cleaner.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383917/normal_5ff0054f1d097.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412758/normal_6011e5ed7373a.pdfIn PDF document text
    • https://cdn.sqhk.co/xorilulog/iaRjchi/frontline_commando_d_day_apk_obb.pdfIn PDF document text
    • http://durowan.sportsontheweb.net/puziwi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424364/normal_60225c7d87922.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423715/normal_602b0bcbd1777.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388285/normal_603517cf8cee6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393016/normal_5fc8b1085b8dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479254/normal_5fdbbf5a9051b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481403/normal_602251b4a13e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467273/normal_5ffea2375d05f.pdfIn PDF document text
    • https://cdn.sqhk.co/roratumopiv/hhhagja/smash_ally_allegations.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428329/normal_5fe8168ebbf14.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kedisijusa.onlinewebshop.net/jukoxawimoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d60d081b-3bea-4490-bdd3-dc9ba60a3311/miss_peregrine_book_6_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fca15c4-e5d5-414e-89fb-ce2d53c178b6/jarefeserixaxigabe.pdfIn PDF document text
    • https://0ea1ff7f-05b3-43a2-9744-178351a05ed1.filesusr.com/ugd/01f9b9_3cccb5bc40ea4cdb98d598b9135ffba7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5855807e-445b-419e-9e49-570cdda529fd/numokuxevogex.pdfIn PDF document text
    • https://8569cc17-8b2a-4187-ace0-95b0550b99f0.filesusr.com/ugd/d6eede_38db5d7e1733471fbc9024306b7b8dd7.pdf?index=trueIn PDF document text
    • http://guxejusoselota.myartsonline.com/savutepipukawefirof.pdfIn PDF document text
    • https://435a888a-8f80-410d-aa77-77edd6e4491d.filesusr.com/ugd/51fec0_3bcc435347a14514b96b4a394b5dfdda.pdf?index=trueIn 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_off0000d9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E5 5472 bytes
SHA-256: 4a80e6f59551752fbabfe91b321393c83b6a21ade650d219e9191e8841fda664
font_01_sfnt_off0000ec4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4E 11392 bytes
SHA-256: faec0b1574e25cde0af92d7e9323d48cd434580114d06feae9cc490b630f430d

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