Malicious PDF — malware analysis report

Static analysis result for SHA-256 8677959aeea6400b…

MALICIOUS

PDF

78.0 KB Created: 2021-03-16 01:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 94c3b7cc1eaf08edfc45f8ae2e8d9b40 SHA-1: bd8577dd301f7ed833b660b586b3bbfb73bb0146 SHA-256: 8677959aeea6400b606d2856243d4fc41380d308776d3b19b840d59549965806
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://zajinet.ru/wix?keyword=most+dangerous+gun+in+free+fire PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496816/normal_5feb0535257bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392452/normal_60328a586867e.pdfIn PDF document text
    • http://pibarulajido.getenjoyment.net/autodwg_to_dwg_converter_2020_full_crack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504791/normal_60221dc485eae.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekasip/icdMhQK/43167255687.pdfIn PDF document text
    • https://cdn.sqhk.co/kuvapipitol/zjiVShc/church_administrative_assistant_job_description_template.pdfIn PDF document text
    • http://tomolijoponix.mypressonline.com/what_was_the_planet_uranus_originally_called.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446394/normal_5fd30c4ca915b.pdfIn PDF document text
    • https://cdn.sqhk.co/suwajipufo/gPhVQgg/mugabigorusibafipo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384472/normal_60215098b81f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450039/normal_60288c720cf11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394077/normal_600589127edf2.pdfIn PDF document text
    • http://rumepado.mypressonline.com/applied_physics_1_for_diploma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450139/normal_602110cd9aaa9.pdfIn PDF document text
    • http://jigikujed.scienceontheweb.net/21590178925.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365542/normal_6010a1c5c4faf.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/rihggRP/non_disclosure_agreement_real_estate_template.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kafuxuf.epizy.com/usgs_earthquake_catalog_data.pdfIn PDF document text
    • http://vusegax.rf.gd/rizonupofipex.pdfIn PDF document text
    • http://vikitadutuxorus.rf.gd/what_does_the_word_truth_mean_in_hebrew.pdfIn PDF document text
    • http://dukidejulorib.epizy.com/associao_de_resistores_em_serie.pdfIn PDF document text
    • http://pimobepetokonud.myartsonline.com/difetewetoluwimujugivo.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_off0000f466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF466 5048 bytes
SHA-256: c762c7149d37be7fe73a7392255a2eab68ea968a97466efdc33b78c12c6b5724
font_01_sfnt_off000105af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105AF 11080 bytes
SHA-256: 6383930d4975f92ec786b6c5a8401314513347dedf7d74f36f0cbbfd4dbae87b

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