Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5e6d2edac624e78…

MALICIOUS

PDF

77.7 KB Created: 2021-03-22 00:48:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 769821608162b77d8ce40b06324d47b9 SHA-1: aa4ef1b422c75e48fc70b640439c864f7fcc6eb1 SHA-256: b5e6d2edac624e78bcbd6afa3e0065fe31dcbf6473f7a43f9d7f54de15064c8b
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical finding for brand-impersonation credential phishing targeting Gmail. The embedded URLs and the document's structure indicate it is part of a phishing campaign, likely leading users to a fake login page. No scripts were extracted, but the PDF's nature strongly suggests it's intended to trick users into providing credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://wosaboler.weebly.com/uploads/1/3/4/4/134496590/fovipaxex.pdf.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://botokaw.ru/123?utm_term=play+store+update+apk PDF link annotation
    • https://wosaboler.weebly.com/uploads/1/3/4/4/134496590/fovipaxex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415739/normal_5fe1fbc509f4f.pdfIn PDF document text
    • https://jinimajaloxole.weebly.com/uploads/1/3/5/3/135314869/2385581.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369503/normal_601837f7179a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480399/normal_604ae897307ea.pdfIn PDF document text
    • http://quickpapp.online/granny_chapter_two_apk_old_versionzqj0g.pdfIn PDF document text
    • http://twoup-viktoria.online/benjamin_bratton_terraformingzffez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449603/normal_5ffc9a526c23f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485568/normal_6016c1546f643.pdfIn PDF document text
    • http://larts.digital/times_table_practice_worksheets_free8qscy.pdfIn PDF document text
    • http://fastcreditcheck.info/42217520514uvr0p.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/43_best_movie_storyboard_examples.pdfIn PDF document text
    • http://damita.fun/twitter_logo_vector_pngrxcas.pdfIn PDF document text
    • http://tezibif.mygamesonline.org/33903295762.pdfIn PDF document text
    • http://momarivido.mypressonline.com/nasasavugu.pdfIn PDF document text
    • https://ruzuwigowan.weebly.com/uploads/1/3/1/4/131453288/tazadomodoli_bekilap_tojogutuvateze_munowudotirulup.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/e8ea814c-19ef-4242-8705-1f773006b86f/blue_parrot_b250xts_pairing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faf96b4c-c8c0-4601-bd9e-1a3dc15eb2db/95386610919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce5c839e-9dbf-4821-a47a-cc7e0284d0a7/ipad_mini_2_case_with_keyboard_best_buy.pdfIn PDF document text
    • http://pidodexogejax.myartsonline.com/us_army_flag_patch_upside_down.pdfIn PDF document text
    • http://xiwozoget.atwebpages.com/atonia_uterina_tratamento.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/def8b7df-da5a-4992-b5d6-5d27e469a98a/thesis_statement_worksheet_college.pdfIn PDF document text
    • http://zixobotivi.epizy.com/64053448611.pdfIn PDF document text
    • http://tiwinifo.epizy.com/10738369781.pdfIn PDF document text
    • http://kipirigup.rf.gd/delukizo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e97aaffb-b267-4568-8c61-020201af7178/26641112555.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_off0000f2c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C2 5120 bytes
SHA-256: 1721912eeac2fa27196fc0bb8caa5147401b18653215154a506f43297356a50c
font_01_sfnt_off00010443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10443 10656 bytes
SHA-256: e17d0b025f2d0fa825e334f69dbd14314c4a2d1055071b1b72b1e5acb4f4b694

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