Malicious PDF — malware analysis report

Static analysis result for SHA-256 07970d09160f6634…

MALICIOUS

PDF

78.5 KB Created: 2021-04-17 05:41:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ea2b9371c8870722a6c6a5d9b4668418 SHA-1: 19c55864992d666121beeb33680c36891916b8a4 SHA-256: 07970d09160f663419758da3936d15935898b24fed80f0b72c4aa38a661325d8
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 0.9998

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://vilenefex.ru/strik?utm_term=the+law+of+success+audiobook PDF link annotation
    • http://sikakapu.medianewsonline.com/carranza_periodoncia_clinica.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403940/normal_60044dc7ab295.pdfIn PDF document text
    • http://boost-store.net/figure_of_speech_worksheets_for_grade_8_with_answersitn7s.pdfIn PDF document text
    • http://iglivesupportteam.com/pretty_little_liars_staffel_1_trailer_german2kato.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378406/normal_5ff5776e2a134.pdfIn PDF document text
    • http://tuforuj.mypressonline.com/36320096105.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501996/normal_6058e29f2448f.pdfIn PDF document text
    • http://fezatubiwe.getenjoyment.net/devi_bhagavata_purana.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481061/normal_5ff5a97938131.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393751/normal_5fd91239b00d9.pdfIn PDF document text
    • http://nokasosozigof.mypressonline.com/36911371009.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427091/normal_6049af04b1683.pdfIn PDF document text
    • http://rezanufeku.mygamesonline.org/adulting_book.pdfIn PDF document text
    • http://zootime.store/52553816625z4rsf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374379/normal_605c8815e9464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377407/normal_6028aa4bc8d98.pdfIn PDF document text
    • http://in-step.shop/difference_between_android_and_iphone_whatsapp87yio.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1ba6f066-89d4-4445-b8a9-08a6de046ef2.filesusr.com/ugd/d40554_b9952ecf3342482290af7de001a42bb2.pdf?index=trueIn PDF document text
    • https://37bdae34-bb2f-403f-997c-54a7c09d9c06.filesusr.com/ugd/dc98cc_535b0016e1ad4758a84ead3102decdb8.pdf?index=trueIn PDF document text
    • http://gajamozaxekega.atwebpages.com/makalah_tentang_akuntansi_biaya.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_off0000f5e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E2 5260 bytes
SHA-256: 46d8507541fb0deaf03d17d5d1c1bb66c5239126f92cf191d696492b4dcfd115
font_01_sfnt_off000107d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D6 10968 bytes
SHA-256: 63772b33ef14441217fb2ebf9ea613dac3bbbd8fa041fecfdb21d0ac87869a3c

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