Malicious PDF — malware analysis report

Static analysis result for SHA-256 9517ba26c5dee315…

MALICIOUS

PDF

96.8 KB Created: 2021-05-06 08:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 009933d2b06e5907c2166626f6b2ed4e SHA-1: ddc16bbca334a3a39b4576d2ccdeb2608b3c4ebf SHA-256: 9517ba26c5dee3155eb76e8f27312b2ced8f40a43e4cb536a47cd635db1695e2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit users through a deceptive document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xezojetit.ru/strik?utm_term=why+reading+is+important+argumentative+essay
    • http://prod-fruit.space/329480511238icaa.pdf
    • https://cdn.sqhk.co/jugemito/hhhctij/nowitobumotuzaga.pdf
    • https://cdn.sqhk.co/wubejiwixu/g9poXKi/75541211881.pdf
    • http://damvglaz6.xyz/83636106523k72yj.pdf
    • http://cosmeteca.com/how_to_adjust_barnett_crossbow_scope5kish.pdf
    • https://cdn.sqhk.co/metexemoraga/aJhhCNJ/hay_day_wiki_level_66.pdf
    • http://cetop.xyz/someone_like_you_adele_piano_letter_notesyacm5.pdf
    • https://cdn.sqhk.co/lovuzegonu/Gx1jghA/togopamixogakanilufegol.pdf
    • http://itverys.space/graco_magnum_prox7_manualicjp4.pdf
    • http://biomaniix.website/how_to_measure_efficiency_of_a_solar_panel7sk6u.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/timeziso/bitbucket_diff_from_pull_request.pdf
    • https://s3.amazonaws.com/zafirawit/climatic_regions_of_the_world.pdf
    • https://s3.amazonaws.com/vuxirefare/interview_questions_and_answers_for_retail_job.pdf
    • https://uploads.strikinglycdn.com/files/ceedfc83-1494-4261-8c60-fa022b53ad96/murachs_oracle_sql_and_pl_sql_for_developers_2nd_edition.pdf
    • https://uploads.strikinglycdn.com/files/9f6b5d6a-65af-4871-ba1f-34f11602b321/91512421558.pdf
    • https://s3.amazonaws.com/vuraradaso/brightburn_movie_in_tamil_dubbed.pdf
    • https://uploads.strikinglycdn.com/files/bede60fc-7ed5-4833-8648-1ee8f56dd2da/83761935563.pdf
    • https://uploads.strikinglycdn.com/files/2a79241e-9c28-4be1-8f0c-babbb4852af3/23879976768.pdf
    • https://s3.amazonaws.com/wekibik/33773634042.pdf
    • https://uploads.strikinglycdn.com/files/2b3a3bdd-8d14-4401-b94e-a383d15bb680/oreck_xl_handheld_vacuum_cleaner.pdf
    • https://uploads.strikinglycdn.com/files/cc03318b-2d48-4edb-83ca-7f70d5c1fabf/asus_router_default_login_rt-n66u.pdf
    • https://uploads.strikinglycdn.com/files/4a6c8991-5555-4735-9895-723f8584423e/73700361535.pdf
    • https://uploads.strikinglycdn.com/files/41025b72-e4c2-4be6-bbd9-4ce95dc23c65/is_sword_art_online_a_romance_anime.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_off00013a5e.bin
8cff688eab5d3660253080a06c0a9a80199d5e8ecb3c9899409cc26df646f8e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A5E 5516 bytes
font_01_sfnt_off00014d0c.bin
bf4a42ae3ee0d65dc53e86a6b51477b6bd8133ccebc145139d4e025bd1f7f2bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14D0C 11192 bytes

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