Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c7d6f2ebeef21b…

MALICIOUS

PDF

80.3 KB Created: 2021-05-07 13:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2b94071149add99937fa3c16bcd86723 SHA-1: 26bb6863c39d790dfb2e47c480474c01be51e148 SHA-256: 95c7d6f2ebeef21b8f397fa53088b793e31eb13cb7777afa2aa04ed8160c877b
186 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to disposable hosting services and are likely part of a link farm. The primary URL, 'https://leonvi.ru/strik?utm_term=tres+metros+sobre+el+cielo+pelicula+completa+parte+2+repelis', suggests a lure related to a movie, likely intended to trick users into visiting a malicious site. ClamAV and ML classifiers also flagged this file as malicious, indicating a high probability of phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://leonvi.ru/strik?utm_term=tres+metros+sobre+el+cielo+pelicula+completa+parte+2+repelis PDF link annotation
    • http://fezibinuzot.iblogger.org/59975566924.pdfIn PDF document text
    • http://reawolt.online/alex_rider_scorpia_full_book66bui.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/hgjfEja/pdf_annotator_free_portable.pdfIn PDF document text
    • http://lovelid.xyz/150586572623sdb8.pdfIn PDF document text
    • http://sodahq.pro/futefomugufiwesarajonaicly.pdfIn PDF document text
    • https://cdn.sqhk.co/futevanu/heZigYC/power_rangers_legacy_wars.pdfIn PDF document text
    • http://muluvigopitego.22web.org/sisosewepefime.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6974b9b2-fc2a-4e9b-9495-84ff65489eb7.filesusr.com/ugd/395280_c26fcb30f482456e8347a517532025db.pdf?index=trueIn PDF document text
    • https://54957a25-093b-4cbd-a4f0-8eb5fea931f0.filesusr.com/ugd/8ba634_c4b3be4f20494e6185ee0277189024ec.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef0ac080-0f57-4f4a-89be-7998b1634dfe/ghost_in_the_machine_phrase_meaning.pdfIn PDF document text
    • http://latilofu.rf.gd/61455127522.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7855f7e7-60d2-4e83-a2a3-581695f7397e/how_to_clean_filter_on_dyson_animal_dc07.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d64b424b-f5d0-4b56-8b62-56513ef644b6/can_tarot_cards_predict_love.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d054d2ac-5368-4517-a4b7-86577249ad10/lariberuvevizevozatubax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a2e2135-8b71-40f4-8f14-af588ce6a826/48225659607.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf764867-9791-4524-893f-cd09c104f2e8/what_does_it_mean_when_your_garage_door_light_blinks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9034a97f-fc50-42a7-ae8d-387f11a62f7a/zirepidem.pdfIn PDF document text
    • https://510adc33-753b-44c0-977e-8d34da8fcdd4.filesusr.com/ugd/5f4192_627075d96b5145e483d0f7973df8f602.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c425b89a-eec0-435b-92d3-ad48f84ae339/22827881717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c98798d5-4dce-4fab-a62f-c54fcc744000/tubikotipow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/223c92a3-ff6c-49fe-af87-66ee5c4c4a0e/bamumigem.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE059 5300 bytes
SHA-256: ed8827d7c2680385e347158c91f6dce2d944cea5d79b293ffbd435cc17f67199
font_01_sfnt_off0000f240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF240 12840 bytes
SHA-256: 5261cf4283ccfb436b06187394b13325a883e1e9f562b77de913faa2976963b2
font_02_sfnt_off00011c49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C49 16076 bytes
SHA-256: df8916dc0488248139c8b7f8575cdad52201066875df9eb3f38f8be7ce625b0f

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