Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f442882686840b8…

MALICIOUS

PDF

69.2 KB Created: 2021-02-12 22:38:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 721c8be48924156f0e77eb16117b0886 SHA-1: 94929ab7c587aafdd5f4c26e466e77d1821c081b SHA-256: 3f442882686840b819db8aa836e204363c3069d48b2af6902007b9ef85f57353
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/wix?keyword=total+conquest+offline+apk+mod+money In PDF document text
    • https://cdn-cms.f-static.net/uploads/4420592/normal_5fe9eb1063ffa.pdfIn PDF document text
    • https://sefubokadizafa.weebly.com/uploads/1/3/4/8/134880044/fotimuguwe.pdfIn PDF document text
    • http://daravto18.ru/2114297388135wwb.pdfIn PDF document text
    • https://cdn.sqhk.co/kawiwitifa/3qulgga/dino_transport_truck_games_dinosaur_games.pdfIn PDF document text
    • https://damemerivojed.weebly.com/uploads/1/3/4/3/134378109/3041857.pdfIn PDF document text
    • http://salearea.pro/bs_tweaker_2_freeksnoa.pdfIn PDF document text
    • http://nufurimuler.iblogger.org/nogijebonufuw.pdfIn PDF document text
    • http://muzhskoizhurnal.ru/ruxubulafavawesewexo6j7o.pdfIn PDF document text
    • https://cdn.sqhk.co/winelolibug/cgGUe4N/22641600302.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472208/normal_5fd3a22d2ffb4.pdfIn PDF document text
    • http://vexawenebo.22web.org/come_trasformare_centimetri_cubi_in_metri_cubi.pdfIn PDF document text
    • https://zemabata.weebly.com/uploads/1/3/4/6/134677216/7a0da03fd79cdbd.pdfIn PDF document text
    • https://cdn.sqhk.co/zawafolor/ibhihez/naduguvoxobiteladujifoj.pdfIn PDF document text
    • http://fastdonwload.space/nekatelolubumimixerimejaxalp8r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379984/normal_5fda6e72ba0a3.pdfIn PDF document text
    • http://mimasajikataza.iblogger.org/tipuzubuginirafirexoj.pdfIn PDF document text
    • https://solakozejifu.weebly.com/uploads/1/3/5/3/135347449/6542896.pdfIn PDF document text
    • https://larulesa.weebly.com/uploads/1/3/4/7/134717423/ed836d8.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/juSjcgi/free_birthday_stuff_appleton_wi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://linakagiwabofa.epizy.com/bootstrap_w3schools.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_off0000d141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD141 5444 bytes
SHA-256: 6ba8ca3b06e5a7e5ea84487db61e2b743fdbea1a6d06c3ea11f65f1878d05dd0
font_01_sfnt_off0000e3c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C5 10548 bytes
SHA-256: fb1fe0f5706400d040a4a183a6541b928e94d35e97a6d0f62f0c5c3f627bc084

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