Malicious PDF — malware analysis report

Static analysis result for SHA-256 70674b7b926ce1b3…

MALICIOUS

PDF

74.8 KB Created: 2021-06-03 07:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 65d65e9af3c87cbbeb19caf512f2d437 SHA-1: 52c29a224a321e82ae8313b43f5138d178fe658d SHA-256: 70674b7b926ce1b386a3ff790a6075ed011efbc0e8d6d069c11dfc9fdffb4cd9
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-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://synerhu.ru/pbw?utm_term=castle+clash+hack+app+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368469/normal_5fd39daa10dc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461202/normal_5fe99b4f278a2.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4367013/normal_60afe94994fb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476946/normal_6069e63807f9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465128/normal_5fccd3d55ac16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492555/normal_5ff9f51ef32c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413454/normal_5fea015fa7ea3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469116/normal_5ff65b527843f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416792/normal_5fe1205b315ee.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3437e746-4d10-4779-a980-40d791b032dc/89695607881.pdfIn PDF document text
    • http://genarozep.pbworks.com/f/19608689659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/246ab905-910a-4754-964b-b5e3a9f6d73d/8_ball_pool_ios_hack_money.pdfIn PDF document text
    • http://nunaruribeg.pbworks.com/w/file/fetch/144415353/accounts_payable_interview_questions_in_wipro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7353beff-182d-43ec-bc6c-d75fdd82bc43/how_many_calories_in_a_whole_wheat_bagel_with_butter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de8defae-55fe-40a7-91b9-9c8c932a5d93/grade_1_living_and_nonliving_things_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3747176b-170e-4a6f-a645-c7cb04daf2b4/how_to_replace_thermal_fuse_on_kenmore_electric_dryer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3932230e-69b1-436b-9392-50bd62561864/walmart_my_schedule_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8127177f-aae8-4791-bc31-61ba9773a802/what_kind_of_charger_do_i_need_for_kindle_paperwhite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ccdf364-914a-4bf3-80c9-2f3b34cc73da/2010_chevrolet_malibu_recalls.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7abfb66e-37a3-488e-bff7-1c49f000e61b/jebobumiwafukozaxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9708b065-0c19-4064-9b54-eb6413cf5a2f/44883461742.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_off0000e791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE791 5304 bytes
SHA-256: f84e08ea590c98b4c581f266102be3d72153eb8a868572cf5e2eea0087d5b223
font_01_sfnt_off0000f9a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A4 10772 bytes
SHA-256: 47f31bea107e7034fbd4e266cb8c68b59a4c95e135121970d921734c1c598c03

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