Malicious PDF — malware analysis report

Static analysis result for SHA-256 52fb420041b8d332…

MALICIOUS

PDF

77.8 KB Created: 2021-03-07 01:17:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c0d7fdf495e4161cc94670b9420c2245 SHA-1: d3764b97f60aeb58e5fd90981969db6dda35d819 SHA-256: 52fb420041b8d332b2797bb76d8325704531eed6326fcac249347b3654a83976
154 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. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/wix?keyword=call+of+duty+ghosts+parents+guide In PDF document text
    • https://cdn.sqhk.co/rusefijow/hdbhgEv/gacha_life_edits_boy.pdfIn PDF document text
    • https://cdn.sqhk.co/bibikodazit/Xihgghs/19249629209.pdfIn PDF document text
    • https://cdn.sqhk.co/kajutizikodu/ia0tGgh/general_tso_chicken_wings_nutrition.pdfIn PDF document text
    • https://cdn.sqhk.co/dugabolisuma/bHicgif/era_of_celestials_redeem_code_may_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/dazJNWx/42523748405.pdfIn PDF document text
    • http://puzofogerexiwi.22web.org/27599643664.pdfIn PDF document text
    • https://cdn.sqhk.co/gapekozuwa/gdpCFjh/fps_shooting_strike_counter_terrorist_game_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafanez/8hhgdhd/sifadefuxipunukinuwaki.pdfIn PDF document text
    • https://cdn.sqhk.co/seponidozit/jeStgxs/korexilewujamofawe.pdfIn PDF document text
    • http://ronitojaxebibo.22web.org/what_foods_to_eat_on_fodmap_diet.pdfIn PDF document text
    • https://cdn.sqhk.co/kewukapugino/83gfhiy/pool_billiards_pro_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/bezupidokaz/gijgHhe/ates_ve_su_5_2_kisilik_oyna.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/gjhyFkJ/87855524901.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/adjectives_to_describe_wet_weather_top.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61fc623a-7446-4bd4-823c-1ffdf84ae794/english_literature_jobs_abroad.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/alale_chittalale_song_audio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e704be86-7fb6-4a68-96cb-38ae94361bd0/biwud.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/fnma_guidelines_pension_income.pdfIn PDF document text
    • http://widurema.epizy.com/logitech_wireless_combo_mk520_-_keyboard_and_mouse_set_-_2.4_ghz.pdfIn PDF document text
    • http://ruguwusizomu.epizy.com/39359573840.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/side_menu_responsive_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A9 5308 bytes
SHA-256: 0dc10b18b439830ff160df927e22b77a9acba85d867e0ba114ef576c37f49152
font_01_sfnt_off0000f9c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C0 9772 bytes
SHA-256: d98d7e7eb38591361faae853fdfbc387cdd6e72728dc3c9917f56b625bb67f9a
font_02_sfnt_off00011b3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B3A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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