Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfd4cd1ca98447f4…

MALICIOUS

PDF

93.4 KB Created: 2021-03-15 17:03:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e193957e35796108afc516a4ac258b37 SHA-1: 15d71d0e716ca0d6be55b37eec2692c32784d605 SHA-256: cfd4cd1ca98447f4a8f96ffaaab92e2c05b9a34dc4610a740924ef99e43e57a7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

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://resalured.ru/wix?keyword=hiro+kala+vs+hulk PDF link annotation
    • http://wabaxifejem.sportsontheweb.net/sazajadaraniwu.pdfIn PDF document text
    • http://megidexabaror.mywebcommunity.org/big_data_analytics_wiley_publications.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/97585078516.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368471/normal_6043edd128183.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/10618974332.pdfIn PDF document text
    • https://cdn.sqhk.co/xederebat/6dBfJAS/events_today_in_downtown_houston.pdfIn PDF document text
    • http://roboludawu.mywebcommunity.org/kathie_lee_gifford_final_today_show.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/a8rxMv7/27549994523.pdfIn PDF document text
    • http://xuzerujagojagip.scienceontheweb.net/cerere_inmatriculare_auto.pdfIn PDF document text
    • https://cdn.sqhk.co/sofizagumup/jHja0Ai/screen_recorder_windows_10_free_download_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/suzagofi/Yyx7ghP/game_of_warriors_mod_apk_unlimited_diamonds.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374360/normal_5fc9d4413ff2a.pdfIn PDF document text
    • https://cdn.sqhk.co/nivazesoj/hcjaTLF/talking_tom_cat_apkpure.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
    • https://uploads.strikinglycdn.com/files/0d17220e-cee6-4970-aef2-a822e092838d/ravaxuxisigavotisanid.pdfIn PDF document text
    • http://reloroxegexe.epizy.com/petaru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ec73abf-28f4-412c-ae07-51646635e110/how_to_check_if_pilot_light_is_lit_on_furnace.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81ec5f35-30af-4b99-b57b-4cda53e2c27c/niwerikusubunefarepebu.pdfIn PDF document text
    • http://losapudobo.epizy.com/72372964456.pdfIn PDF document text
    • http://bexovivuvere.myartsonline.com/direposeduralopaxubepi.pdfIn PDF document text
    • http://gomugugagaf.onlinewebshop.net/calorie_counter_app_free_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/952740c7-0139-4de2-8aa2-5927e9e0f75c/73824335110.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_off000123a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123A4 4436 bytes
SHA-256: 26ac77d4a892cec43aaaf70daf7fed0c593b96d592af5c7aebb85a9fdf8d2f22
font_01_sfnt_off000132b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B4 11784 bytes
SHA-256: f9bd72dba2437f6a2eb8f1e113bd8940ca665fc22f64150a72c295bdbc999ce4
font_02_sfnt_off00015a72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A72 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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