Malicious PDF — malware analysis report

Static analysis result for SHA-256 afeebef47ed94457…

MALICIOUS

PDF

68.6 KB Created: 2021-03-04 21:10:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 25bd708c19c789863e93e6db1c03ee3a SHA-1: 8ec2197b92ffb1e58ee3e19ab9c25bc380286e58 SHA-256: afeebef47ed94457cc8d11ad2ff8bc5e6fb259d8da1312dfe977c70af7e6f950
184 Risk Score

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://crophysi.ru/award?keyword=perry%2527s+chemical+engineers%2527+handbook+eighth+edition+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4407552/normal_6035305c7bdf8.pdfIn PDF document text
    • http://raisinshq.club/7684689999buz6a.pdfIn PDF document text
    • http://pro-komp-master.website/apex_150_user_manualnk7v2.pdfIn PDF document text
    • http://bullbananavannaone.xyz/414748907789b4d0.pdfIn PDF document text
    • http://xilegutopeza.22web.org/walmart_financial_statements_2017.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460447/normal_603e66337c7f2.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/57845139-7fee-40f1-aa57-d9793f929869/rock_band_4_new_instruments.pdfIn PDF document text
    • http://galojuxutiwas.epizy.com/xebid.pdfIn PDF document text
    • http://pavipalu.epizy.com/junap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d500c1d5-9050-4c82-92a3-a57e702a07ef/how_to_plumb_instant_hot_water.pdfIn PDF document text
    • http://lofetumavigasi.epizy.com/43503921467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05e040fd-78f2-4029-8b8c-b879688d962f/57581771489.pdfIn PDF document text
    • http://pasazaxara.rf.gd/68507375605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3edbd8d3-5167-4f80-b6f6-d6646bd3543a/newozexipakozuwaf.pdfIn PDF document text
    • http://tojederetesez.epizy.com/dopuloxutis.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_off0000ce43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE43 5908 bytes
SHA-256: c47328dffc2014e4e74aa1d322d40ff9674c9331fe33fed3c139497ac3c2c340
font_01_sfnt_off0000e23f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23F 10136 bytes
SHA-256: e5bead32092ac23157ab2103310c002b4eae8447f178ccd5ec6cfb963b3502af