Malicious PDF — malware analysis report

Static analysis result for SHA-256 ede238ef34280bc2…

MALICIOUS

PDF

78.5 KB Created: 2021-05-28 05:40:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: a52e655f94c413e9f9366b09cab70607 SHA-1: 2670e8f0287706bce50be740b33a0a5140e147ca SHA-256: ede238ef34280bc24f87179dcbfef4c44f2097d13bf58ad3f4c08e4d30be26e5
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The document body, though heavily obfuscated, contains text related to movie downloads, which is likely a lure. The presence of ML and ClamAV detections further supports its malicious nature, indicating it's designed to distribute or host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/strik?utm_term=safe+haven+full+movie+download+in+hindi+480p PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461249/normal_5fd93dc1d7c79.pdfIn PDF document text
    • https://vudufidobisij.weebly.com/uploads/1/3/4/6/134673615/budetej.pdfIn PDF document text
    • https://fenatelelopowi.weebly.com/uploads/1/3/4/5/134510159/vorababepamesebilipa.pdfIn PDF document text
    • https://toxerixefekivi.weebly.com/uploads/1/3/5/2/135296371/mosum_bedilewitej_liduler.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462362/normal_5fffbbcf72320.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470689/normal_60306f03e22be.pdfIn PDF document text
    • https://tamilazubi.weebly.com/uploads/1/3/4/6/134604156/keneto_sewawiw.pdfIn PDF document text
    • https://vilewojux.weebly.com/uploads/1/3/0/8/130874250/mibuxarevofaxev_zotubezizavi_lakuvitixowa.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/rugizukujukadid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453718/normal_60362dec3faf7.pdfIn PDF document text
    • https://nabutamu.weebly.com/uploads/1/3/4/5/134525390/wexesubutuxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486982/normal_6018dbdbe3d34.pdfIn PDF document text
    • https://posapana.weebly.com/uploads/1/3/1/4/131454172/jetanupigozen.pdfIn PDF document text
    • https://natesikapepik.weebly.com/uploads/1/3/4/7/134750077/7613737.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/eae19cb5-484b-4453-abaa-ab729c2771e8/elastic_band_exercises_for_flabby_arms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16aa1e7b-7fb4-4e5f-8790-bf1f44339616/sebokugobufezexomadal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94175b9a-ed21-46dd-8dd7-38ebf55946e4/solid_state_physics_ashcroft_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/615c6934-bf38-4cb2-861f-65e12f10550f/dr_weil_anti_inflammatory_diet_pyramid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/105dffb5-4d0c-4810-a91b-9149c909bad8/juki_ddl-5550-6_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dd6b392-f9a6-4776-98df-3b80fb2220ba/best_digital_strategy_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d126864-9da7-4804-b530-7f71767a5e5c/penman_financial_statement_analysis_and_security_valuation_download.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D4 5688 bytes
SHA-256: bfaacd36e238387f58ca38ce7eb95a347fd269c88240592bad3fdf79007c9cad
font_01_sfnt_off0001062e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1062E 11292 bytes
SHA-256: cc03c8f59e72b3c48097d01fd4608f2e455050cd176ea5b50bae808a7e29dafe