Malicious PDF — malware analysis report

Static analysis result for SHA-256 7350af2ee1704797…

MALICIOUS

PDF

77.3 KB Created: 2021-03-02 16:57:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 976d127b9ee2405f59109435b5514374 SHA-1: 15ca2b2551d05dd6e36423f93712b4edbd3dc577 SHA-256: 7350af2ee1704797791a5857fe6a270a4acf7d78bf9f26ea8da88f11663aca40
186 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/award?keyword=what+is+fair+mindedness PDF link annotation
    • https://segagewemavovus.weebly.com/uploads/1/3/0/8/130874565/nuxelugewek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381320/normal_6012346f5f428.pdfIn PDF document text
    • https://cdn.sqhk.co/wezopexa/BQdgfJi/windows_8._1_usb_boot_software.pdfIn PDF document text
    • https://sujuxeneme.weebly.com/uploads/1/3/1/3/131380470/zebugozatilodu-zotasejufamuwa-vijal-nelaxadubunuza.pdfIn PDF document text
    • https://ranenowubugipo.weebly.com/uploads/1/3/4/0/134040983/jimejorogeloro-zoxig-tozaxewa.pdfIn PDF document text
    • https://sidugavumudoriz.weebly.com/uploads/1/3/4/9/134902227/bamarobewus.pdfIn PDF document text
    • https://molawakipo.weebly.com/uploads/1/3/1/3/131379716/fowoku-lujivoris-detogawuzodone-gekozi.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/bhadra_lakshmi_stotram_lyrics_in_telugu.pdfIn PDF document text
    • http://ladujose.sportsontheweb.net/oceanic_plates_move_apart_at_divergent_boundaries.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/dicBeji/gapatixuxu.pdfIn PDF document text
    • https://cdn.sqhk.co/bovokolel/WjNgdge/bloons_monkey_city_hacked_ios.pdfIn PDF document text
    • https://sufivelogazawe.weebly.com/uploads/1/3/4/6/134600369/meneva.pdfIn PDF document text
    • https://cdn.sqhk.co/pifajaloro/hjgIhc3/human_game_fall_flat_human_walkthrough_2020.pdfIn PDF document text
    • http://wigageturuv.mywebcommunity.org/98264047476.pdfIn PDF document text
    • https://kerejokav.weebly.com/uploads/1/3/1/6/131637695/tipaxogobuwaze_woximanaxubelir.pdfIn PDF document text
    • https://wufijoduk.weebly.com/uploads/1/3/2/3/132302847/46129.pdfIn PDF document text
    • http://shoppingyxplus.xyz/timeline_photoshop_templatepv8vf.pdfIn PDF document text
    • https://vobanugan.weebly.com/uploads/1/3/5/3/135340106/xovewoki-melesuse-kufaku-tudesobikok.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://xuvekixofeku.onlinewebshop.net/how_to_buy_original_warcraft_3.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C7 4808 bytes
SHA-256: 4e673d728e94ac3c47d48b2551dc74518332184e9bf18d7e0118e65f2eeb66d7
font_01_sfnt_off0000f7ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EA 9936 bytes
SHA-256: 084c98fa69d2e8c224a37b7c22acbd3514a9ab2e8f62c7fe52d0f813ad74a28f
font_02_sfnt_off00011a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A06 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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