Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0bef3fa730bddf0…

MALICIOUS

PDF

99.7 KB Created: 2021-03-18 13:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9e899ceb7569d34ce7c0320cc63f5fb1 SHA-1: 04c3ea95248b9402bd15d32ad56710908800e9e7 SHA-256: e0bef3fa730bddf0d1c83a9be4cce1180ee6ca2d64ef2595ec80fd598692b5a7
134 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 and presents a deceptive download button. 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-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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xajibur.ru/wix?keyword=sunbeam+ice+cream+maker+gel+canister+manual PDF link annotation
    • http://komaxinatobofe.medianewsonline.com/mefojulavatobiroseri.pdfIn PDF document text
    • http://jekenufakewe.mypressonline.com/12270636573.pdfIn PDF document text
    • http://kugaraginoja.mypressonline.com/dijufufupofikidanepud.pdfIn PDF document text
    • http://konalofasu.mywebcommunity.org/timegivibavanot.pdfIn PDF document text
    • http://xiwakaravivomik.scienceontheweb.net/soposuludap.pdfIn PDF document text
    • http://nakekizedexu.getenjoyment.net/88948878799.pdfIn PDF document text
    • http://nuzarekuzugav.mypressonline.com/technical_analysis_explained_by_martin_j_pring.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/how_to_do_multivariate_multiple_regression_in_spss.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/7120e337-cabe-48c5-a832-663e32fdb257/vevamakejoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5009414-7ca1-4a4d-bf83-7bfc0132196f/all_american_pressure_cooker_parts_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2535a382-c7e3-4c0b-ac83-c9b0c3eacbc9/7_habitos_de_la_gente_altamente_efectiva_stephen_covey.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bb69a1f-b2a6-430b-a7d3-f372058f5420/somukogasupuzefetevoluw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6d61281-309f-40fa-b72c-92089afc5914/pisobukowonawuriduvigisiz.pdfIn PDF document text
    • http://duxegejuw.atwebpages.com/cambridge_english_business_higher.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/gakinonojejisagibupabaxow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/996da4b4-28b9-42ac-839e-078fddce1537/motorola_minitor_v_pager_charger_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0862f9d-ec75-4348-a507-b7ce304eb4dd/what_is_advancetrac_rsc_2005_ford_explorer.pdfIn PDF document text
    • http://wotidupodugi.myartsonline.com/xufowujadinutalos.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/angry_bird_transformers_apk.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_off000146fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146FC 5424 bytes
SHA-256: ef89ae238d67ce8e3062de588491c0024abd92859b0818e7726ce667e34f4aa1
font_01_sfnt_off0001595b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1595B 11844 bytes
SHA-256: bb65ab55f2a073c3e5b8c7a868e6f608d551d7acd890be6193fa24d2b81404b6

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