Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e204d716ae58b5c…

MALICIOUS

PDF

68.7 KB Created: 2021-03-01 14:22:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6e33d18cdcfbd31a9e77eb7986dc1631 SHA-1: 71556784c85c0b8c55936a96f86a3b626f634c7b SHA-256: 0e204d716ae58b5c00a66a554e1c84d9f1f27a686e87f21aecfd3f52dff8536c
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many hosted on disposable domains, and a heuristic identified it as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or a scam. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

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
  • 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://nipisod.ru/strik?utm_term=yes+please+coffee PDF link annotation
    • https://digutejuwunapon.weebly.com/uploads/1/3/5/3/135325267/zibowutipajik.pdfIn PDF document text
    • https://libodarupebixab.weebly.com/uploads/1/3/0/9/130969674/subamewuwanix.pdfIn PDF document text
    • https://wizitizisib.weebly.com/uploads/1/3/4/3/134361222/1328154.pdfIn PDF document text
    • https://leponinidokawe.weebly.com/uploads/1/3/4/5/134502666/6757386.pdfIn PDF document text
    • https://cdn.sqhk.co/samekikogeri/qxgjSHp/83309848915.pdfIn PDF document text
    • https://wedemewimobuxet.weebly.com/uploads/1/3/4/3/134309086/mawuzutobe.pdfIn PDF document text
    • https://cdn.sqhk.co/foseziwate/jjja8jh/lajagi.pdfIn PDF document text
    • http://xogunajeraxuda.mywebcommunity.org/descartes_first_meditation_summary.pdfIn PDF document text
    • https://kusazejur.weebly.com/uploads/1/3/1/4/131437880/8039118.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/73089660050.pdfIn PDF document text
    • https://roboxojepuz.weebly.com/uploads/1/3/4/2/134235986/60e7640.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/public_speaking_tips_for_students.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pikaderobiw.atwebpages.com/50053103380.pdfIn PDF document text
    • http://dejedizanabi.epizy.com/benatubojarivumotuw.pdfIn PDF document text
    • http://mabodinidemiku.epizy.com/lawizuxepawov.pdfIn PDF document text
    • http://ligujizulogi.atwebpages.com/pokemon_soulsilver_breeding_guide.pdfIn PDF document text
    • http://tifavamifikas.myartsonline.com/gutonuvonoxed.pdfIn PDF document text
    • http://jexonuwunow.epizy.com/navien_tankless_water_heater_maintenance_near_me.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_off0000d280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD280 4876 bytes
SHA-256: ee9326f46261003d610d1ebcaceba52c6528fe2d62bf74486c947ff2e64e0b91
font_01_sfnt_off0000e330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE330 10156 bytes
SHA-256: d906ab295780e70a62a25e2201da55640bad08bc4f9836913690a2b7038b7af8

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