Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7c6c239d9e15a7f…

MALICIOUS

PDF

74.3 KB Created: 2021-03-28 17:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b6aff797e681bc44d6afbe53b46cd93b SHA-1: 219608e2788447cecb9326dbf501b3500fb711cc SHA-256: b7c6c239d9e15a7f154b0443f72e283679db57c7aa02a586eb61a02812b5f55c
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://jottigo.ru/award?keyword=meralgia+paresthetica+treatment+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410214/normal_60233ea15660a.pdfIn PDF document text
    • https://cdn.sqhk.co/xiladuxe/bYginhi/rogue_soul_2_armor_games.pdfIn PDF document text
    • https://cdn.sqhk.co/xumelesep/xELhhhf/5648822903.pdfIn PDF document text
    • http://wavasesinile.22web.org/wekusegadugaginaraxutegal.pdfIn PDF document text
    • https://cdn.sqhk.co/xomakonezema/Xohe5hb/zubaviwakasipaferiloj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501364/normal_603bb59f8e29d.pdfIn PDF document text
    • http://memubalejegezur.66ghz.com/vofazazisofoxezanu.pdfIn PDF document text
    • https://cdn.sqhk.co/gukitane/ibic6lF/bomber_crew_ps4_gameplay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469645/normal_6051241390ad7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418786/normal_6050b7823cc7f.pdfIn PDF document text
    • https://cdn.sqhk.co/bisuligiga/fZjcie5/golden_boot_2020_europe.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/GYDieVF/clue_cast_now.pdfIn PDF document text
    • https://cdn.sqhk.co/gijosevozu/d2igQhi/76889041221.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/lqXQjjj/zifufi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jenenulufem.rf.gd/kibofenixumuvimizerezovon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cc80199-b434-4d17-bc20-38d3438a1437/20639987157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e003ce8-f7aa-46e6-9483-6760b76991e5/dikowugimasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2fbc38b-6817-47f8-b1df-c784edd9c053/34168765795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62d1fd6f-7756-4217-87fd-0b7fa0d282fa/duraflame_3d_infrared_electric_fireplace_stove_with_remote_control_-_dfi-5010_cream.pdfIn PDF document text
    • http://lejugolidisixod.rf.gd/char_broil_big_easy_gas_smoker_recipes.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_off0000e620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE620 5572 bytes
SHA-256: 2beabd0fe1f3df2aa53c64dd9c7149e2c857683c8d857732061fdf8f10896703
font_01_sfnt_off0000f8f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F4 10156 bytes
SHA-256: 6dfab236515b1b75edd2b4f288de8d461dccaedee7f834bfb7014c4bbe75b74c

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