Malicious PDF — malware analysis report

Static analysis result for SHA-256 90576121e4b623ed…

MALICIOUS

PDF

84.5 KB Created: 2021-03-24 05:44:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 354ac0b516b26f37d31286705679dc83 SHA-1: 9fb0a67a71dc4921a79cfdb30bbd90c6277cf97a SHA-256: 90576121e4b623edaf39b13ec9709e1f52d46d581d31a75ec28171a903fa21c8
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://jumiwimov.ru/strik?utm_term=yongnuo+yn+560+iii+vs+canon+430ex+ii PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412761/normal_60349e8ee5fd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480891/normal_603b937d9bad7.pdfIn PDF document text
    • http://livecopyrightverification.com/23849620069g67dh.pdfIn PDF document text
    • http://xijogeziku.66ghz.com/political_allegory_in_faerie_queene.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373301/normal_5ff31230049b0.pdfIn PDF document text
    • http://bilkaita.space/omnibus_budget_reconciliation_act_of_1981_mental_healthb7wr2.pdfIn PDF document text
    • http://yarrebitteh.online/xerofimowunesiruvonafm7rp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385012/normal_604d18a3c115f.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/NYpghji/lbs_kerala_set_answer_key_2017.pdfIn PDF document text
    • http://justiciaforjustice.com/samsung_bluetooth_keyboard_instructionspqh0w.pdfIn PDF document text
    • http://circleshtang.xyz/magetimumesisibem2d5y5.pdfIn PDF document text
    • https://cdn.sqhk.co/disegivoji/jggibAv/tourism_business_plan_examples_ppt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405925/normal_60472b19ea25c.pdfIn PDF document text
    • http://rutopadazemed.22web.org/distinguishing_between_atoms_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496153/normal_6043980323eb7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wabupotobexuxu.epizy.com/bhairava_tamil_movie_video.pdfIn PDF document text
    • http://bonejaje.rf.gd/abductive_reasoning_questions_and_answers.pdfIn PDF document text
    • http://banitazivi.epizy.com/guess_how_much_i_love_you_by_sam_mcbratney.pdfIn PDF document text
    • http://lidikulogape.rf.gd/adivasi_gane_dj_me.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_off0000f205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF205 5704 bytes
SHA-256: 44281ed93f64891e6639cdab30d357b346c7bcac15775b8dfc5fee8610d205b2
font_01_sfnt_off00010588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10588 11420 bytes
SHA-256: ff09748efab35c1e1fbbf617f10dd9012177de7e6f04aa99910bf3523690e898
font_02_sfnt_off00012cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CEA 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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