Malicious PDF — malware analysis report

Static analysis result for SHA-256 e202a79c02ca5a51…

MALICIOUS

PDF

70.4 KB Created: 2021-03-16 08:24:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: dfe46862f8a540143bff0d4151ceddcb SHA-1: 598fd81a0a7f9c7bb2cac78fafccc426fd5ead59 SHA-256: e202a79c02ca5a51ccaff5207c1c4fd0b42c38cc5b976789dd8addeb44418ac2
154 Risk Score

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 0.9991

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=harrison+design+1911+sights In PDF document text
    • https://cdn.sqhk.co/juvowisire/EigidCH/44636692569.pdfIn PDF document text
    • https://cdn.sqhk.co/pejozujemu/jaf0wPW/97911906564.pdfIn PDF document text
    • http://localdesign.me/creator_academy_course_exam_answersmx005.pdfIn PDF document text
    • https://cdn.sqhk.co/kawiwitifa/giBdRL8/didonobarufibupepu.pdfIn PDF document text
    • https://cdn.sqhk.co/lekabewoz/yieuhb3/gattu_aur_battu_game.pdfIn PDF document text
    • http://olymptrade.buzz/33806547442tzolg.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxudopusot/rhiAmDI/genuine_sharpened_volcano_fragment.pdfIn PDF document text
    • https://cdn.sqhk.co/zolewiko/aXNjaqD/nadukuwokapexozox.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/4jphhgh/94204517489.pdfIn PDF document text
    • https://cdn.sqhk.co/zisuzunon/gW6XX1C/pupejukogafuginarexi.pdfIn PDF document text
    • https://cdn.sqhk.co/faserekino/hhAZigO/game_of_thrones_monthly_box.pdfIn PDF document text
    • https://cdn.sqhk.co/wadupaxi/ehiV6Lo/67308777267.pdfIn PDF document text
    • https://cdn.sqhk.co/zojoguxuban/djifpja/7921892533.pdfIn PDF document text
    • https://cdn.sqhk.co/nemazuwigumo/lxjiice/kung_fu_panda_warrior_selection.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/najubu/2009_toyota_corolla_s_for_sale_by_owner.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/vitubigen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af76220e-894f-4462-a956-8c328159b3f2/38017169338.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/956f7b48-f6a1-41c8-b834-074a2fa1ccd2/what_does_call_to_action_writing.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/biela_manivela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/387a659f-1437-4686-9786-2ae25998c70a/stairway_to_heaven_tattoo_forearm.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/the_four_scott_galloway.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ffc2dd6-9e7f-4c7b-976c-6b96cc02ce60/best_startup_ideas_in_india_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dbde045-3b6b-43d6-8ec0-f6b28ce52457/harbrace_college_handbook_wikipedia.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/emirates_flight_521_final_report.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_off0000d5e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E9 5224 bytes
SHA-256: 42232abeab5a12afc4dbb04c06cce20097e8b482564f76bd0d28419503de693e
font_01_sfnt_off0000e7a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A5 11044 bytes
SHA-256: 6d4464a7d1d7b6b06c0c16844212219282bbe48d1f0c33f7971778d275bc45fe