Malicious PDF — malware analysis report

Static analysis result for SHA-256 08ed8b71df7b3bb9…

MALICIOUS

PDF

77.0 KB Created: 2021-03-18 00:58:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: bee0635f2615f943b99305935da359a4 SHA-1: 119b9afe9eb8f7030abc395c16c2c8ccb54e847a SHA-256: 08ed8b71df7b3bb94ba5459a4004bceab54af031987ea2bdd6de0b50e66b2bae
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The document contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting an attempt to redirect users to malicious sites. The presence of external URIs and the overall structure strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/strik?utm_term=toyota+camry+trd+2020 PDF link annotation
    • https://cdn.sqhk.co/wugunifikezu/ChbdNWt/forest_hd_wallpapers_4k.pdfIn PDF document text
    • http://gedirobidepud.scienceontheweb.net/puvuxikufojimepisixubipo.pdfIn PDF document text
    • https://cdn.sqhk.co/xovenekot/ghficca/how_to_instagram_video_without_link.pdfIn PDF document text
    • https://cdn.sqhk.co/firokizita/idREpge/crystal_report_for_visual_studio_2013_community.pdfIn PDF document text
    • http://fusexetop.22web.org/wikukedusogexapi.pdfIn PDF document text
    • http://rofuxipof.mywebcommunity.org/how_to_train_for_soccer_fitness.pdfIn PDF document text
    • http://sunigol.22web.org/seeking_knowledge_in_islam.pdfIn PDF document text
    • http://zopokujejisolan.getenjoyment.net/metode_argentometri.pdfIn PDF document text
    • https://cdn.sqhk.co/gupimupiset/cJT75gp/good_beer_pong_trick_shots.pdfIn PDF document text
    • http://dadivasim.sportsontheweb.net/42393042110.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gitipezusev.rf.gd/89440269102.pdfIn PDF document text
    • http://vipuwizu.epizy.com/english_slang_words_list.pdfIn PDF document text
    • https://5a995288-ce6f-4ae3-a3e6-14272d8003db.filesusr.com/ugd/7be1cd_fc7ca3b809b14609a59a401f075e5bbb.pdf?index=trueIn PDF document text
    • https://4a39c6c9-989b-4d11-b2d8-cc0becc7f193.filesusr.com/ugd/ef0078_0b28fbe5a7ec45828a28f02b8ed3cba6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0332b98d-e80b-4e63-a9cd-95e313228b11/the_mastery_of_self_love.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9c04998-2e46-45c4-9a22-378648e8eeb3/how_much_does_hyundai_service_cost.pdfIn PDF document text
    • https://bb491b24-4c81-4ccc-8daa-bf1baeb171c2.filesusr.com/ugd/93c935_6e33b75b2db14d4d82e4e5bbb072a5cc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8e21d38-226e-4882-ad7a-dfbb4bf6c4ea/best_educational_video_games_for_8_year_olds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b22f188d-088f-4018-bfdf-af390b070720/which_of_the_following_is_true_about_void_and_voidable_contracts_quizlet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51c9ca14-198e-4ad6-aee6-645ec1686e92/plantronics_wireless_headset_power_cord.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_off0000f1c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C7 5200 bytes
SHA-256: 16be0a2e69d61eb8ba6729da990b7c035b98a98acc3b4b9468df924cda7458c9
font_01_sfnt_off00010366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10366 10636 bytes
SHA-256: eb4eb35a66a21d9855814eee1e68b8b3e8865800cc7cf351d0141645df6524b7

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