Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fd08661bfe92da3…

MALICIOUS

PDF

85.7 KB Created: 2021-05-19 00:44:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ec033a6de3663379a8fa49f489ff8323 SHA-1: 818ce46075317e9d6cd654c33cd40eb12e6625e5 SHA-256: 8fd08661bfe92da31d3c8a5cfd3e1ec42441ad6bba881f7e997531bd2903d109
144 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=wwe+2k17+mod+apk+download+for+android+ppsspp PDF link annotation
    • http://zegosuvavanow.22web.org/bisorusudinebobarakuri.pdfIn PDF document text
    • http://benovezim.22web.org/tosubidapidovovobetuwesid.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/miwolezedubujoz/beach_buggy_blitz_mod_apk_unlimited_money.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/cast_list_a_christmas_carol_1951.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/85991810181.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/bissell_powerforce_compact_2112_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8df331b5-0c9f-49ce-a7da-7dd113aa36be/mogijaraxigimekigarojima.pdfIn PDF document text
    • http://kuwokezolofe.epizy.com/disorders_of_male_reproductive_system.pdfIn PDF document text
    • http://retuvolixunes.epizy.com/xuvevagonulusoborevepum.pdfIn PDF document text
    • http://wirijabi.rf.gd/asuran_movie_theme_bgm_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wujanozo/sirilikarevojufekebabugi.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/confirmation_reply_email_template.pdfIn PDF document text
    • http://vakakumiwizexoj.epizy.com/ashampoo_free_1._0._7.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/how_to_draw_a_cat_realistic_face.pdfIn PDF document text
    • http://vewokepewaki.epizy.com/how_to_find_a_certain_breed_of_dog.pdfIn PDF document text
    • http://dinisevorodak.epizy.com/zee_bangla_live_tv_software.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/nigeria_millennium_development_goals_report_2015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81a671d0-37d4-4aea-9c0a-4baf185c4924/how_to_speak_english_simple_sentence.pdfIn PDF document text
    • http://xalikitu.epizy.com/wumutakiri.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/vowedusawu.pdfIn PDF document text
    • http://gabepan.epizy.com/best_app_to_learn_arabic_reading.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/duxanubemojonipirig.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_off00010d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D4D 5620 bytes
SHA-256: 60c007898fa73e20d2b2e9a118861be366e1dda9c8f81464b2d563c2f68610f6
font_01_sfnt_off0001207e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1207E 11944 bytes
SHA-256: 3951a05abc33bf4bc6073a4d0292fa630ac4c50882064725bc06072c11d1b0ce

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