Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2d687a37de06f49…

MALICIOUS

PDF

71.6 KB Created: 2021-04-04 03:21:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5222c20588fbda28373214279fca9225 SHA-1: dd15d40171bdc286f48e7a816034412b64263daa SHA-256: f2d687a37de06f497265a89cdc1758611388c33d64e7032678cbe263003ac910
136 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'ponafet.ru' and the 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggest the document is designed to trick users into downloading a password-protected archive, a common tactic for evading security controls. While no scripts were explicitly extracted, the PDF structure and malicious classification point towards an exploit or obfuscated content designed to initiate a malicious download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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
  • 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://ponafet.ru/wix?keyword=stellaluna+book+pdf+free
    • http://gachihyper.xyz/141660247132t55c.pdf
    • http://amandeepsadyora.com/positive_and_negative_number_line_worksheets95u6g.pdf
    • https://cdn.sqhk.co/ditetona/djjhicK/mefexune.pdf
    • https://cdn.sqhk.co/vizefejij/khgLhii/suladonisuxef.pdf
    • http://prosucre.pro/xipigadakomaruzujeresug407wv.pdf
    • https://cdn.sqhk.co/vewimidipiv/jV8j55s/word_of_the_day_learn_english_improve_english.pdf
    • http://kapusta.pro/16187774923obbsz.pdf
    • http://argo-tourism.com/xozepakajy72r.pdf
    • https://cdn.sqhk.co/dedikifefisu/cjgAihd/gun_strike_shoot_killer_mod_apk_download.pdf
    • http://tehnikator.ru/bcrypt_salt_formatbnyv4.pdf
    • http://uscreditreport.info/fapitijojewl3za.pdf
    • http://menbp.online/are_hisense_tvs_4ke4jy1.pdf
    • http://aycotoro7.xyz/ucsb_environmental_studies_courseslduqm.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gelawiweza/thirteen_colonies_map_activity_answers.pdf
    • https://uploads.strikinglycdn.com/files/3289bd2c-3ccc-4956-98f7-b66e38153472/53283909065.pdf
    • https://s3.amazonaws.com/kijelopazekune/98869401350.pdf
    • https://s3.amazonaws.com/xujitezu/how_much_should_a_garage_door_repair_cost.pdf
    • https://s3.amazonaws.com/nitatotol/joraninunamefokoxefavevu.pdf
    • https://uploads.strikinglycdn.com/files/9a2d679b-4174-4bd3-bd49-640222909601/lepuk.pdf
    • https://s3.amazonaws.com/paropabaru/what_chapter_is_firmament_in_the_bible.pdf
    • https://uploads.strikinglycdn.com/files/73b8ab0a-1e6c-4ccf-8040-bd619f1fcb9d/gibukabobafurelakiv.pdf
    • https://s3.amazonaws.com/mexavofezoxi/49563769495.pdf
    • https://uploads.strikinglycdn.com/files/796f7232-c1db-46d0-b898-28f6d08dabaf/pegusumavigusufotuzitakep.pdf
    • https://uploads.strikinglycdn.com/files/fab339e9-96cd-45cc-9347-2c34ab8fee0b/how_does_an_old_robertshaw_thermostat_work.pdf
    • https://s3.amazonaws.com/debiwelof/la_biblia_catolica_latinoamericana_online.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_off0000dc36.bin
1e634604b933f766ba880ebc89a2dc8093b1e4995a474da2e30d732592a93858		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC36 5164 bytes
font_01_sfnt_off0000edd3.bin
9b9dbd336a6dd65a191e21541dd1f28267cdb0742e06a53bb036f01dc1715192		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD3 10200 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.