Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbf676c4d45a50ae…

MALICIOUS

PDF

65.1 KB Created: 2021-03-17 00:41:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0da4ecaa115f3d317b7f6b0686e6311b SHA-1: d1a20f882c25dc712379e87b362440601667849d SHA-256: cbf676c4d45a50aeda4717b611102d2d139540725e013ba090ef1edc8f088c6e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains embedded URLs and is flagged by multiple heuristics as malicious, including ClamAV and an ML classifier. The document body, though partially corrupted, suggests a lure related to a 'Manchester uk weather report'. The presence of multiple unknown URLs indicates a phishing or malware distribution attempt, likely leveraging the document as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://bologen.ru/123?utm_term=manchester+uk+weather+report+today PDF link annotation
    • http://ulekschool.online/danazuzulomusasejijgnnn.pdfIn PDF document text
    • http://joblanc.xyz/cerere_preschimbare_permisq22vz.pdfIn PDF document text
    • http://homearfes.com/xokepopanis6fy.pdfIn PDF document text
    • http://biotringel.shop/161577270743ol.pdfIn PDF document text
    • http://moresukko.ru/sweet_sins_superstars_mod_apklwoxi.pdfIn PDF document text
    • http://acgmgroup.ru/my_igloo_ice_maker_isnt_making_icej8rvg.pdfIn PDF document text
    • http://copyrightreports.com/incident_report_writing_powerpoint38mgk.pdfIn PDF document text
    • http://help-copyrighteamservice.com/how_the_grinch_stole_christmas_vocabulary3in9l.pdfIn PDF document text
    • http://look-hotel.com/sole_fitness_e35_elliptical_machine_manualpm8fj.pdfIn PDF document text
    • http://rmk4sale.xyz/application_form_format_in_excelgrhl8.pdfIn PDF document text
    • http://antileqphh.site/rewojiwubawuvuderozaganlpy.pdfIn PDF document text
    • http://kungfumalibu.com/69723842497mv731.pdfIn PDF document text
    • http://forexgeeks.net/72009314951jh9ha.pdfIn PDF document text
    • http://azakalaza3.xyz/kujofapunuvoezwf4.pdfIn PDF document text
    • http://kupivse.xyz/vegetable_soup_ninja_foodip02nl.pdfIn PDF document text
    • http://gbarb.me/gepijaxulupoliko3v779.pdfIn PDF document text
    • http://grinallex.shop/fefinelovutevejuzomogjhk16.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/51b615b7-7cdc-4f1b-abcb-0176c06cf2f4/onkyo_tx-nr709_factory_reset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dceb8bc1-075c-41ad-9284-6851816485d8/what_happens_if_you_fail_visual_field_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3216b56-4583-4767-a1bb-4ab7d7fadcf5/famous_writers_in_english_literature_21st_century.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5815e617-d0d6-46b7-85cd-00151dd7ccd5/78645269478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b93e75c5-dcd8-45ee-aa62-00660d26d2a5/que_son_los_manuales_de_organizacion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f44d7e7-08ec-4679-81b7-e580730c8281/nadisita.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_off0000c280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC280 5392 bytes
SHA-256: 4c02d78174f0093b88a23936842259d8931d95a5113c54057f30d086aa9ee275
font_01_sfnt_off0000d4f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4F2 9980 bytes
SHA-256: 70ee65329fb64565ce129c97d6019af2e9a158cff1f326bbc047ea1aa37294d2

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