Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c296a681373e3b…

MALICIOUS

PDF

81.8 KB Created: 2021-03-14 09:57:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 826db635c59a0678e7abd68c9d625a41 SHA-1: b89c30c61ee452704216968b3fb5effdc6b2a770 SHA-256: 47c296a681373e3ba066ca7c2ad5a91cc53f986b6dcf3fdbfb75f1ce5b8a696a
186 Risk Score

Malware Insights

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

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 0.9996

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/strik?utm_term=how+to+fix+a+panasonic+microwave PDF link annotation
    • http://dizanuvusawowi.22web.org/boot_manager_premium_apk.pdfIn PDF document text
    • http://pemizirevubel.mywebcommunity.org/48390804636.pdfIn PDF document text
    • https://cdn.sqhk.co/gobumavurob/vuwhfTX/best_arcade_racing_games_xbox_one.pdfIn PDF document text
    • http://kaxavetaxudu.mywebcommunity.org/xubizafutabu.pdfIn PDF document text
    • http://bewujasixi.mywebcommunity.org/mass_effect_andromeda_official_strategy_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/hgcsjdb/angry_birds_transformers_jenga_code_generator.pdfIn PDF document text
    • https://cdn.sqhk.co/kenipafitu/icgisjj/american_heart_association_first_aid_certification_near_me.pdfIn PDF document text
    • http://fibisazorowax.mypressonline.com/mujezujuvisafezulod.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/minimize_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/molodomo/fKVmFjc/gorillaz_members_age.pdfIn PDF document text
    • https://cdn.sqhk.co/wejafivelij/X4Vhd1X/81158558264.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/XNHFijc/elsewhere_book_report.pdfIn PDF document text
    • http://doworevo.22web.org/aplikasi_bobol_wifi_tetangga_android.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxapivasif/Oibhy5a/space_shooter_galaxy_attack_mega_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gisusisabez/ejiKIic/fipunewonajewapuvi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bugenerefajujus.atwebpages.com/16054228350.pdfIn PDF document text
    • https://e25b7b56-d8f7-44cb-9276-56428e53d1cc.filesusr.com/ugd/63f3e8_b8cd49f33037482bac5f82bdddafe574.pdf?index=trueIn PDF document text
    • https://2386e270-bd20-42c1-b3e5-1ba7eaa1d68d.filesusr.com/ugd/b4f0c6_029d1feaced4484f960e4de6f4038eee.pdf?index=trueIn PDF document text
    • http://sujuletabekomus.rf.gd/vevatozufe.pdfIn PDF document text
    • http://zogosugo.onlinewebshop.net/which_economy_is_the_largest_in_africa.pdfIn PDF document text
    • http://nabiderafiwo.epizy.com/ethical_issues_in_accounting.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/25512509129.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_off00010059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10059 5312 bytes
SHA-256: 527524e30685f53b62da3e5ac43239d4c4de4720261f98d4bc4cf74b19b28a36
font_01_sfnt_off0001126d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126D 10996 bytes
SHA-256: 821bf8a57703e35d2453f231c92e365ee101c962f690751117966ef92bef2685

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