Malicious PDF — malware analysis report

Static analysis result for SHA-256 bebcfaf5b4a7fc7d…

MALICIOUS

PDF

79.1 KB Created: 2021-03-01 15:44:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27e2a6418363740699e8daeebd2029f9 SHA-1: bb4056997c264711acc08c7ca088408bed901cbe SHA-256: bebcfaf5b4a7fc7daf2c7c041a4d5eb69509e9827856798a66b360665193265e
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. One prominent URL, https://jumiwimov.ru/wix?keyword=hivemind+mythic+guide, is directly embedded and likely serves as a lure. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=hivemind+mythic+guide
    • https://pibiwija.weebly.com/uploads/1/3/4/8/134896476/punapuborad.pdf
    • http://rolivazugatar.scienceontheweb.net/79061312520.pdf
    • https://rapexinet.weebly.com/uploads/1/3/4/3/134328854/3603674.pdf
    • https://fuvedomuwipiw.weebly.com/uploads/1/3/1/6/131636935/5650681.pdf
    • https://sorafenime.weebly.com/uploads/1/3/4/3/134320910/ninotivetukux_sojofit_rotaxivafom_gozinababo.pdf
    • https://cdn-cms.f-static.net/uploads/4381546/normal_601f3386a782b.pdf
    • https://static.s123-cdn-static.com/uploads/4499021/normal_5ffc1cea3fbd7.pdf
    • http://barajofa.mywebcommunity.org/11105722523.pdf
    • https://wunaramalus.weebly.com/uploads/1/3/4/5/134576193/3a8a1.pdf
    • https://cdn.sqhk.co/danopefasuf/YhdjdjS/fezemotobuxasuligotumajow.pdf
    • https://cdn-cms.f-static.net/uploads/4386839/normal_60250eff42581.pdf
    • http://xenalebosob.scienceontheweb.net/how_long_do_you_have_to_have_your_permit_in_arkansas.pdf
    • https://cdn-cms.f-static.net/uploads/4495526/normal_601c659e7c8e0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tufitijinexu/formule_alchimista_golarion.pdf
    • http://suvalomimo.atwebpages.com/pexitot.pdf
    • https://s3.amazonaws.com/sukedil/movie_hd_kabir_singh.pdf
    • https://s3.amazonaws.com/kitakilesa/55901313105.pdf
    • https://s3.amazonaws.com/nademopor/11792363046.pdf
    • http://tososite.onlinewebshop.net/how_to_set_time_and_date_on_vtech_cordless_phone.pdf
    • https://s3.amazonaws.com/tiniruru/altova_xmlspy_2012_professional_edition.pdf
    • https://s3.amazonaws.com/wokesabisevo/adobe_creative_cloud_error_201.pdf
    • https://s3.amazonaws.com/xidulumexi/jizexililixud.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8c0.bin
f3a4c77da0bf6b3336ab7779bc33b3c4b0bc019c6a4bbf7ec7b9ffdf69f555d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C0 4960 bytes
font_01_sfnt_off0001098c.bin
ce38e932bdaf146491225d3e23dd6ff0f6cee0acdf39dc6774b0bc0fa95dd0ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1098C 10968 bytes

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