Malicious PDF — malware analysis report

Static analysis result for SHA-256 e766d4ee7fe83df0…

MALICIOUS

PDF

65.0 KB Created: 2021-03-18 10:26:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb8345114cd0b708ef9259ad4f4f60cd SHA-1: e0b8876a3573c2fd7ae804b32f9a2170774d0dc6 SHA-256: e766d4ee7fe83df080838392d478af832a52931da9b00519abe2756441dfcdd2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. ClamAV detection and ML classification strongly indicate malicious intent. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/wix?keyword=sentry+turret+id+unturned
    • https://cdn.sqhk.co/fakupavod/hejamge/pubic_hair_fashion_2020.pdf
    • https://cdn.sqhk.co/lojadisexudo/ghjeHid/la_redoute_catalogue_femme.pdf
    • http://testertumentum.space/gumofiwekukibipaeeda.pdf
    • http://mukanoderike.iblogger.org/best_sword_build_sao_fatal_bullet.pdf
    • http://gadalonevuv.iblogger.org/call_me_by_your_name_book_cover.pdf
    • http://fitokaps.xyz/sanepowg3vbz.pdf
    • https://cdn.sqhk.co/xolafunodo/XTNu5tB/fun_air_hockey_table_big_w.pdf
    • http://oneitstore.pro/dd_monster_manual_2ppz3k.pdf
    • https://cdn.sqhk.co/baxorurifina/hWdjePI/up_hill_race_2020_results.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dowavelaxam/sujujubinukabirasilulux.pdf
    • https://uploads.strikinglycdn.com/files/0b89d24a-8c63-42ae-87f3-76752af2f756/ocharleys_chicken_tenders_nutrition_facts.pdf
    • https://s3.amazonaws.com/lakadutof/6517183812.pdf
    • https://uploads.strikinglycdn.com/files/a2b0dc2f-9147-4c59-8941-66222af91db8/48014539102.pdf
    • http://zewukiro.epizy.com/beyblade_battle_game_android.pdf
    • https://s3.amazonaws.com/diwitapezu/bajirao_mastani_malhari_song_mp4.pdf
    • https://uploads.strikinglycdn.com/files/05f792f3-6f86-43aa-9130-cc7cb17029e6/lokinuwekeze.pdf
    • http://nobufep.epizy.com/witifinasi.pdf
    • https://uploads.strikinglycdn.com/files/ebd84b08-d793-4c70-85bb-2c1af1a64e49/72343752781.pdf
    • https://uploads.strikinglycdn.com/files/7ee11b1c-ae47-49ec-80c9-3a26edde1737/when_should_you_use_a_dehumidifier_in_your_basement.pdf
    • https://uploads.strikinglycdn.com/files/9e420c0a-46ac-4a62-a377-059cf16f7418/25324919565.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_off0000c6ab.bin
f5c40de9394538909197f4601da17b3d27033d4d568d63214601c2c6e7a1dd7e
pdf-font-stream PDF embedded font (sfnt) at offset 0xC6AB 4604 bytes
font_01_sfnt_off0000d66a.bin
a7ae33b5db5468f56cc56da44c152f86cf53f7cac1c2a38d2dcf127a7742885b
pdf-font-stream PDF embedded font (sfnt) at offset 0xD66A 9484 bytes