Malicious PDF — malware analysis report

Static analysis result for SHA-256 6036f35338d8dff3…

MALICIOUS

PDF

81.4 KB Created: 2021-04-08 05:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ef4fff5731fd56b0ffacbed52050fcc0 SHA-1: 19fb339a1f728ec727c793dd8b91e9c41761fce9 SHA-256: 6036f35338d8dff3981045781976258ba1db58eec687f8fa803c026f0af77992
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 0.9997

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://resalured.ru/123?utm_term=catia+v5+advanced+surface+design+tutorial+pdf PDF link annotation
    • http://guvizaw.22web.org/linguee_french_to_english.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499341/normal_5ff89df027af2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497353/normal_601b5097a2fc9.pdfIn PDF document text
    • http://pozesex.iblogger.org/abc_english_grammar_book.pdfIn PDF document text
    • https://cdn.sqhk.co/lesasafo/RhBiajb/diy_ideas_for_bedroom_cupboards.pdfIn PDF document text
    • https://cdn.sqhk.co/divojimo/fhfviiB/41197720302.pdfIn PDF document text
    • https://cdn.sqhk.co/rigowodikot/hjqirjZ/nitro_racing_drag_and_drift_mod_apk.pdfIn PDF document text
    • http://wizuvadidena.iblogger.org/anti_stress_kit.pdfIn PDF document text
    • https://cdn.sqhk.co/sibamoxa/eqiadja/37973467470.pdfIn PDF document text
    • http://jebumivusesujan.iblogger.org/69175391548.pdfIn PDF document text
    • http://bamasadukarudam.iblogger.org/dubavaze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390095/normal_5fc5d794d1225.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403685/normal_5fc8c4571fba7.pdfIn PDF document text
    • http://xofiladaf.22web.org/axis_bank_fixed_deposit_rates.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fupuvafibip.rf.gd/ada_diabetes_2018_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/328299d2-6815-4020-8635-9016eb75b8d5/dafufezodefidofovemosavor.pdfIn PDF document text
    • http://lanosewidem.rf.gd/pirabibujo.pdfIn PDF document text
    • http://jalafugidovi.epizy.com/vehicle_testing_on_chassis_dynamometer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bf0f23d-f497-487b-9d6b-f625a731e7f8/91548954684.pdfIn PDF document text
    • http://sewusewevivezu.rf.gd/89394680293.pdfIn PDF document text
    • http://dixiveze.epizy.com/oracle_12c_administration_workshop.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_off0000fe33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE33 5412 bytes
SHA-256: 7839d27c6cb415cb40357e6ea23e61758ea6083aa4558f119937ed9aacab329e
font_01_sfnt_off000110b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110B7 12500 bytes
SHA-256: 85cd9fc15ee7c3f7e38f8a746e424f1bf46101c2f51996b2a26275fa6a6d2e23

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