Malicious PDF — malware analysis report

Static analysis result for SHA-256 f932001f8943304d…

MALICIOUS

PDF

63.3 KB Created: 2021-02-18 19:58:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b04c1b7ee8dea41c2a559caac1342603 SHA-1: 202e9c3f9939b1a6f323da1d73031a1c41f3ae19 SHA-256: f932001f8943304da98c41cc0c2cea2e8211b63d05d5d68e019f242281e7d525
136 Risk Score

Malware Insights

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

The PDF contains embedded links and lures users with a seemingly relevant search query. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery via the suspicious URLs. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://druttle.ru/wix?keyword=texas+science+fusion+5th+grade+answers
    • http://idealica-ituficiale.website/google_form_sign_in_sheetp3s2q.pdf
    • http://uanews.website/samsung_flow_free_download_for_pc15ght.pdf
    • http://gobigs.space/xubovanajetopovajolg0wdo.pdf
    • http://mnogoturov.com/9789301244w9r3o.pdf
    • http://hdvideo.design/simulator_for_brawl_stars_mod_apk_unlimited_moneybhwml.pdf
    • http://bokifov.iblogger.org/89287009018.pdf
    • http://loginwithfb.site/tumaxexafakunizejitelaja8qkz.pdf
    • http://tiktokhd.design/wapiwapodokofem6kv2.pdf
    • http://bcpzonasegur4viabcp.com/the_little_mermaid_ariels_beginning_watch_onlined63oq.pdf
    • http://tehnikator.ru/declaracion_universal_de_derechos_humanos_1948_resumenc5dn7.pdf
    • https://cdn.sqhk.co/xokekekav/fyUs18J/garden_gnome_halloween_costume_baby.pdf
    • https://cdn.sqhk.co/posukomokufi/rijjiib/99392805067.pdf
    • http://lovechat24.club/hillsong_worship_songs_list89be0.pdf
    • http://ericksandoval.com/tasekirojexapixofapa4ensa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://miwofalixi.rf.gd/pakug.pdf
    • http://sobogasitizi.epizy.com/beethoven_symphony_5_piano_duet_sheet_music.pdf
    • http://purubonosarule.rf.gd/adriana_ross_a_former_model_from_poland.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_off0000ba37.bin
ba55323bc052c39d5c78ddf9abfb2cdb226cb8ed985c5f574e5bc0853f6d92bb
pdf-font-stream PDF embedded font (sfnt) at offset 0xBA37 5484 bytes
font_01_sfnt_off0000ccf7.bin
8beaa0fa4dcf50eb03f082f7209eb85f37278abcaa910e75f071df942c49c0f2
pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF7 9904 bytes