Malicious PDF — malware analysis report

Static analysis result for SHA-256 05904b27571908a7…

MALICIOUS

PDF

78.9 KB Created: 2021-04-05 20:55:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: cb64078f5389749507caaf228d054a98 SHA-1: dad3ea7f3ba8b03267dd52f8cbfe196f94e32dc2 SHA-256: 05904b27571908a71136d6083a94989c64de946c4b469f886aa3c14c6dfb92c9
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 0.9998

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/strik?utm_term=harbor+breeze+ceiling+fan+installation+manual+pdf PDF link annotation
    • http://vuzitofakomuj.22web.org/xupuja.pdfIn PDF document text
    • http://tobaliwono.mygamesonline.org/pancreas_endocrino.pdfIn PDF document text
    • http://chambreapp.xyz/apostolado_marianoaeqc6.pdfIn PDF document text
    • http://kawasus.scienceontheweb.net/robasemededifom.pdfIn PDF document text
    • http://raisinshq.pro/how_to_spawn_a_helicopter_in_gta_v_pc1u358.pdfIn PDF document text
    • http://silkhfig.bid/american_pie_reunion_movie_in_tamilhf488.pdfIn PDF document text
    • http://opensoda.pro/753126405302zqx6.pdfIn PDF document text
    • https://cdn.sqhk.co/webuzifinuno/7jc7E7S/30840065161.pdfIn PDF document text
    • http://richteam.site/how_to_say_mandarinxuhq2.pdfIn PDF document text
    • http://olymptrade.buzz/72454511044gqbuy.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/1Nrg1gd/strategic_thinking_definition_in_management.pdfIn PDF document text
    • https://cdn.sqhk.co/zakolemafemo/fhh9jen/the_maze_runner_3_full_movie_watch_online.pdfIn PDF document text
    • http://tigusomoxuwij.22web.org/grade_12_math_curriculum_guide.pdfIn PDF document text
    • http://lasns.fun/voradupugab0mc8.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
    • http://pitigapevede.onlinewebshop.net/structure_de_la_cellule_animale_et_vgtale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ab347c4-4e34-4ede-ae02-f01aee976716/demonic_witch_costume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29c98bb0-4c6c-42c2-82af-1186631f2004/dewokunodizitosudu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce4ac24c-f0af-4df2-86ac-c07b04f7ff18/nebazubomeratepuwuforaweg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/314a900f-c4bc-42aa-aa87-b0f4fb67fac8/bezosovir.pdfIn PDF document text
    • http://memepev.myartsonline.com/18103529018.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E3 5508 bytes
SHA-256: 6378d1cef8423e9e67f3b5ddf24fb7176f3038706f902d30d405fb8b78639c02
font_01_sfnt_off0000fc82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC82 10372 bytes
SHA-256: 4276647d8c207da63abfd3215e9a5940783ef5a6118df30788c4e42143d52568
font_02_sfnt_off00011ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FFB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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