Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe91efe6e0df18b…

MALICIOUS

PDF

82.3 KB Created: 2021-04-25 23:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9f9dabbab89a1a7f00532f1733ab4b0c SHA-1: 801bb9a875393862036cb2da74912e1a2c1c77e8 SHA-256: 7fe91efe6e0df18be20edd53a1b5c9845c33e56b22ed8ef01dfcd1c55216646b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://midufefew.ru/strik?utm_term=bissell+vacuum+cleaning+filters PDF link annotation
    • https://zewadozodatigi.weebly.com/uploads/1/3/4/3/134337643/9541781.pdfIn PDF document text
    • http://megiloreb.mypressonline.com/juba_arabic_dictionary.pdfIn PDF document text
    • http://creditpm.com/char_broil_smoker_manual0p486.pdfIn PDF document text
    • http://fonudesuwobulud.mygamesonline.org/trauma_abdominal_pediatria.pdfIn PDF document text
    • https://cdn.sqhk.co/lululitoj/fvheNih/100_bts_songs_offline.pdfIn PDF document text
    • http://jenuxijaf.mygamesonline.org/mejamumufof.pdfIn PDF document text
    • http://strongcreditscore.info/how_to_know_if_your_evod_twist_is_charging4gjs6.pdfIn PDF document text
    • http://copyrightprivacy.site/5860357174biomm.pdfIn PDF document text
    • http://leaninrzpd.site/12063980529u2eab.pdfIn PDF document text
    • http://folugomobok.getenjoyment.net/perrines_literature_book_12th_edition.pdfIn PDF document text
    • https://jumaxejew.weebly.com/uploads/1/3/1/6/131606465/keresexerelalekiwo.pdfIn PDF document text
    • http://kurs1.xyz/13_reasons_why_characters_that_died0z6ta.pdfIn PDF document text
    • http://lofajemami.sportsontheweb.net/visual_basic_reserved_words_list.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/jepsjjS/xuvijelomagizezutex.pdfIn PDF document text
    • https://vofamebibefa.weebly.com/uploads/1/3/4/6/134694090/garonoxadoranufudu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://japamitafixe.myartsonline.com/81719535297.pdfIn PDF document text
    • http://kuxubakelixuzot.atwebpages.com/limofokotebaj.pdfIn PDF document text
    • https://3f46bf15-0a8c-4e80-b3e5-a2e3bf90e008.filesusr.com/ugd/8e6e76_9ce9d077be924ebb9cfd310e3f378d1a.pdf?index=trueIn PDF document text
    • http://dasobiviwadodaj.atwebpages.com/ajaran_agama_buddha.pdfIn PDF document text
    • http://dakafatuvuguviz.atwebpages.com/92331161209.pdfIn PDF document text
    • https://0dd4521b-3e41-4083-9bcc-807cce03ae78.filesusr.com/ugd/cfe2e9_31650226443a4e59924a317c0361a459.pdf?index=trueIn PDF document text
    • https://14535e1a-360a-4d01-a655-fa33e115c80e.filesusr.com/ugd/b222ea_530223b420464018b00ab5443c488199.pdf?index=trueIn PDF document text
    • https://6d251753-49d0-4f5b-a278-10ed1cacc9d0.filesusr.com/ugd/5c139a_e04afc44616148d1b8ddae1b1a68e67e.pdf?index=trueIn 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_off0000f614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF614 5080 bytes
SHA-256: d3120ed4685526af861a20391a816036f6da2ed484bfb8e915328dcc9b0bb948
font_01_sfnt_off00010746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10746 11280 bytes
SHA-256: 2f8b8d2722d17ab926ec6566e381fb3570c8a18b82c3525307ef4609979d6570
font_02_sfnt_off00012dd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DD4 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.