Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b94294825f73149…

MALICIOUS

PDF

72.0 KB Created: 2021-04-08 10:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8af1d46e9bc27bb4eef4f02b8588b0e0 SHA-1: d815d23c04f41735e6380c9614d0ac7fe45ef674 SHA-256: 2b94294825f73149bac228e862c2d1185675755557b9e26d33d5a10c18a2238f
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 0.9997

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://seumenha.ru/strik?utm_term=spivak+calculus+solutions PDF link annotation
    • http://white-x.fun/leawo_registration_code_freef2md6.pdfIn PDF document text
    • http://axecheat8.xyz/57350595905te1om.pdfIn PDF document text
    • https://cdn.sqhk.co/nemazuwigumo/iiUSthe/29813483954.pdfIn PDF document text
    • http://jawunefuda.mygamesonline.org/24035260535.pdfIn PDF document text
    • https://cdn.sqhk.co/xuteposidobi/gfijJkp/color_road_app_keeps_crashing.pdfIn PDF document text
    • https://cdn.sqhk.co/wenudiwome/ljjjgig/95296726456.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/Ljjjdij/jekumupefitafigemamafa.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/jgWifjh/47663475413.pdfIn PDF document text
    • https://cdn.sqhk.co/pumopivosoba/hdE6ogi/wifi_drivers_for_windows_10_download.pdfIn PDF document text
    • http://best-ital.fun/xelegetca4z0.pdfIn PDF document text
    • https://cdn.sqhk.co/sevalaturi/fcjjhju/new_pk_xd_lock_screen_hd_wallpapers_1080p.pdfIn PDF document text
    • http://zeboxagekej.sportsontheweb.net/84089051365.pdfIn PDF document text
    • https://cdn.sqhk.co/fapetemiji/VGifhih/superhero_mods_for_minecraft_1._16._1.pdfIn PDF document text
    • https://cdn.sqhk.co/veladaxuzeba/Dg45icF/7150710761.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/hlgfztY/bedwars_blockman_go_download_pc.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/7a943907-9bee-45e3-926b-bdd18a4e5a7c/zisikosodoropaxusekonoji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2e778b1-b0c6-45c2-b766-586a702eb2e3/3838774212.pdfIn PDF document text
    • http://kewevagisugimuw.onlinewebshop.net/why_does_my_sony_sound_bar_cut_out.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c72710b4-f7ef-4e3f-afea-c0f776b3589e/64425343543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d6bbc05-1ac9-418f-b53b-a21c3d89a236/nexesiwimixefote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/323b5332-b298-493e-b056-b696d0d0e8a5/11726674210.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 5

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB87 5056 bytes
SHA-256: 5e2c1174346d087e0f223b355443dfdf083089ec854e993e08760d0fa3c5c933
font_01_sfnt_off0000ecd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD9 11264 bytes
SHA-256: 4ad29e28c660f48af9e653f726d3699bfe11c41f1f1eb4a3f5422f1bb596e57b

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