Malicious PDF — malware analysis report

Static analysis result for SHA-256 3798614a6ad02a3b…

MALICIOUS

PDF

83.0 KB Created: 2021-04-10 01:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 20f7d196e98dcf9628fecb890acb3b2a SHA-1: 6c95600c4262dee2af2fc5d2b1dddac08f59b5a9 SHA-256: 3798614a6ad02a3b79483a06fe9b0860256224799f4d9eaeae12be232568cc68
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/strik?utm_term=wrist+blood+pressure+monitor+directions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4467287/normal_5fd67265717c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493891/normal_5fdbda0572e92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416927/normal_5fdb99550f848.pdfIn PDF document text
    • http://ladiluvame.mypressonline.com/bamowu.pdfIn PDF document text
    • http://mezeferatitora.scienceontheweb.net/kenimabomo.pdfIn PDF document text
    • http://parazepurafeza.medianewsonline.com/how_to_become_a_registered_vet_tech_in_california.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/37320129306.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/58995271696.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/sales_representative_contract.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/fupum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd6f1268-e268-4bfb-90f9-8e11321a6f48/citizen_navihawk_blue_angels_worldtime_c300-q00842.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/enumeration_of_coliform_bacteria_in_milk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22637bbf-0926-4f3d-bcf6-fd75cb66dad0/bodexav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7814fe7-23f2-4f3d-b308-629329ebcb47/shark_euro_pro_x_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46c49f0c-8cdc-45bd-b3d6-ab85ec153622/the_house_with_a_clock_in_its_walls_trailer.pdfIn PDF document text
    • http://lanosebezazov.onlinewebshop.net/41774514356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d8c467d-6c6c-4327-9a31-cf3886f38fb9/what_is_d_meaning_of_thermal_equilibrium.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5b193f3-8446-42e9-a2ab-5e8a583f6dc1/how_to_day_trade_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa5b238c-e983-4ef1-8f7b-bf3594c82093/corporate_social_responsibility_definition_scholarly_articles.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/vigegosu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC0 5164 bytes
SHA-256: 3608c297c653d296cf5a11de308b87029f6cf0d9271de8664cb266564cb9a06d
font_01_sfnt_off0001013f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1013F 11020 bytes
SHA-256: b0600fa30a09f16c61e4da6cc3392c27b81ec741e9ae5745f30dfe2781d14674
font_02_sfnt_off000126ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126AB 16632 bytes
SHA-256: a1348e1d1ccd5ef949220de3676ff85bb4ddbab9867fbcd4ef9f54297cef0142

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