Malicious PDF — malware analysis report

Static analysis result for SHA-256 783d8f385a89402b…

MALICIOUS

PDF

79.8 KB Created: 2021-02-26 05:04:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e10b6cc4a09a74a7ce0d9c06d38e1f5 SHA-1: 82445d84b72588835fb867b4ae0dd1e0516c7815 SHA-256: 783d8f385a89402baa4861644cabed61c4125a58a01b1e4b1159228536f3ac53
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, and it contains an embedded URI pointing to a suspicious domain. The document body is heavily obfuscated, but the presence of external URLs suggests an attempt to redirect the user to a malicious site. No scripts were extracted, but the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=moss+mother+cavern+map
    • https://cdn.sqhk.co/napefabet/igidBvE/75845443713.pdf
    • http://zeboxagekej.sportsontheweb.net/how_to_tell_if_engine_is_running_lean_or_rich.pdf
    • https://static.s123-cdn-static.com/uploads/4393183/normal_5fd07bef8ab20.pdf
    • https://cdn.sqhk.co/zijikunu/idjegjC/44144016199.pdf
    • https://cdn.sqhk.co/tumitibira/2hbfWhf/4863456518.pdf
    • https://cdn.sqhk.co/raninogozo/Whb48bV/clash_royale_cards_max_star_level.pdf
    • http://poxumanavofeboz.scienceontheweb.net/11826842041.pdf
    • http://xenuven.22web.org/87605170621.pdf
    • http://lamaded.mywebcommunity.org/jipoxiga.pdf
    • https://cdn-cms.f-static.net/uploads/4386354/normal_60267eede5acb.pdf
    • http://fegudifo.22web.org/76640311170.pdf
    • https://cdn.sqhk.co/jagibuvat/hfSmqgd/star_trek_fleet_command_wiki_refinery.pdf
    • https://cdn.sqhk.co/gupuwiwi/cCicjbQ/vataweja.pdf
    • https://static.s123-cdn-static.com/uploads/4450037/normal_5ffc1f6509a51.pdf
    • http://itawegan.space/historia_de_espaa_2_bachillerato_anwpay6.pdf
    • http://b4shop.icu/bedeludef1mvd6.pdf
    • http://dutov.org/xibowilusigazafpu26.pdf
    • https://cdn.sqhk.co/gobefuvumi/gjhWzhi/angie_s_list_customer_service_phone.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://faxiruvud.myartsonline.com/machine_learning_book_review.pdf
    • http://sulalanetoki.epizy.com/chernobyl_series_episode_1_subtitles.pdf
    • http://pivirujifija.epizy.com/nagexoja.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_off0000fc81.bin
fec117d02e741aaf20a0e552de30da8dea829b538a297673aceee296587593f2
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC81 5208 bytes
font_01_sfnt_off00010e20.bin
ef8c355e54bb4dac3aa70aad575516148647598bf5e6bb6e415e0d518e066074
pdf-font-stream PDF embedded font (sfnt) at offset 0x10E20 10544 bytes