Malicious PDF — malware analysis report

Static analysis result for SHA-256 3419480600b423a0…

MALICIOUS

PDF

74.8 KB Created: 2020-12-16 18:45:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: dea7f7f6bf12570d8ea1c7d24630b28b SHA-1: 8dc9b65a71e4e8270ff96adfc8e0160d49993027 SHA-256: 3419480600b423a04e10d68a7b96f9c2a5507cbbedd9d5919109183907f7d71b
184 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'women's perfume', likely intended to trick users into clicking the malicious link.

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
  • 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.
  • 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.
  • 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://gettraff.ru/strik?utm_term=most+popular+women%2527s+perfume In PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/902907.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379718/normal_5fc63b1a8ee00.pdfIn PDF document text
    • https://sekirodalod.weebly.com/uploads/1/3/4/6/134673836/d058611.pdfIn PDF document text
    • https://puxugewukuniw.weebly.com/uploads/1/3/4/4/134492634/tekuwije.pdfIn PDF document text
    • https://xabisemegebo.weebly.com/uploads/1/3/4/4/134491474/rovaj_varerinuj_firupawadigap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385207/normal_5fd780e4ced02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402745/normal_5fc3e5a623713.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/0150d693-0d9d-4703-beee-41a5186c0ab3/99973447266.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/formation_autodidacte_informatique.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/985ef424-4a3e-4367-8f8a-680c1a494cfa/sakiwulazazoxetixijiduze.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/zeropesatibefusepavod.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/83368146233.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD065 5176 bytes
SHA-256: 2c386af676b0db7f389c82c223a4f816245889b07f0aad06b7f5913b513c1008
font_01_sfnt_off0000e211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE211 15008 bytes
SHA-256: 974d99f992f32723d56da44f275b9e6f4370c89ed5396ef3a413e564de0feed6
font_02_sfnt_off00011125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11125 3528 bytes
SHA-256: e8b07db381777a4e3ebab61571ecd39cf304ad779fb8c1a1f61160b162bbc252

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