Malicious PDF — malware analysis report

Static analysis result for SHA-256 8002790004874f56…

MALICIOUS

PDF

77.6 KB Created: 2021-05-05 20:47:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 2be5c1c4368f8b139e6f60d5c5486e83 SHA-1: 571ddbeb0e97e3c00f59d5122907f6f8faba72fe SHA-256: 8002790004874f56c41034cf1a7518a590571ce568c3c69135e962338a77e86b
126 Risk Score

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 0.9990

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://soxebez.ru/strik?utm_term=presonus+audiobox+1818vsl+price+in+india PDF link annotation
    • http://andyhongdigital.com/67636077219y4pzu.pdfIn PDF document text
    • http://napowojeba.medianewsonline.com/definition_of_marketing_by_different_authors.pdfIn PDF document text
    • http://sunugukumota.getenjoyment.net/kesan_budaya_hedonisme.pdfIn PDF document text
    • http://com-servers.online/pufopuwikisafipojolipiv74vog.pdfIn PDF document text
    • http://bimadepunepi.mypressonline.com/somerazawuka.pdfIn PDF document text
    • http://varuvoruva.iblogger.org/83590732329.pdfIn PDF document text
    • http://idealslimitaly-ufficiale.site/how_to_explain_social_justice_to_studentsptlgr.pdfIn PDF document text
    • http://xenalebosob.scienceontheweb.net/mumelime.pdfIn PDF document text
    • http://findssldz.xyz/letter_formation_worksheets_year_2xlbsy.pdfIn PDF document text
    • http://kevakigev.medianewsonline.com/beginner_new_headway.pdfIn PDF document text
    • http://goossyy.online/cod_cold_war_beta_release_date_pcfk2qs.pdfIn PDF document text
    • http://kokusurajiguz.22web.org/33837092767.pdfIn PDF document text
    • http://gokawojop.scienceontheweb.net/buvuganagonuvaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mixanaz/funakibixetowutel.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/7742817367.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/pretty_little_liars_the_perfectionists_season_1_episode_10_recap.pdfIn PDF document text
    • http://bawaluzobadomi.epizy.com/58057932359.pdfIn PDF document text
    • http://fekejuw.atwebpages.com/71083497588.pdfIn PDF document text
    • https://36d3fe4d-ce77-4ecd-ae21-04b42370c250.filesusr.com/ugd/871c54_dcb6c78d355845e7938eb0ce4ff6d308.pdf?index=trueIn PDF document text
    • http://bizedesaxifu.onlinewebshop.net/classical_piano_sheet_music_for_intermediate.pdfIn PDF document text
    • https://0d555108-1732-4721-8d72-76d747b2053a.filesusr.com/ugd/1b0481_87b9bf39fde7426d8f300ea35b6151a2.pdf?index=trueIn PDF document text
    • https://41be308f-8a64-4dec-8b30-4937605be974.filesusr.com/ugd/f042fe_31e6437d585f4837b9d76a85f1cfd4e1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/google_angry_birds_game_free.pdfIn PDF document text
    • https://2ed9768e-82a7-41f7-bc91-4b86d8d7aa0f.filesusr.com/ugd/bdbd91_a8ddc2b8205f43bdb9b2161df9f4ffb5.pdf?index=trueIn PDF document text
    • http://kadegezopofog.rf.gd/replacement_pole_for_spalding_basketball_goal.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_off0000ef7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7B 5584 bytes
SHA-256: a346bed6053803fdce1d3e96b6561ef50d677ee87865c02e55eedc0609ddba6b
font_01_sfnt_off00010292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10292 11492 bytes
SHA-256: b8ada23f6574ad377f85557bb59c23819c692ceb0f25b85672e9424b96b22432