Malicious PDF — malware analysis report

Static analysis result for SHA-256 a58e66a92905de7c…

MALICIOUS

PDF

72.2 KB Created: 2021-06-05 01:36:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f6d67dd3118847b2e50d2720a4687569 SHA-1: 94fe95ec244ad8044359a294c603ef2eb9854393 SHA-256: a58e66a92905de7c6161eb87131de33abcc97cd740add5b02fca88e7da339bae
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 0.9998

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://wastran.ru/pbw?utm_term=wallerstein%2527s+world+systems+theory+core+countries PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454990/normal_6016fa692f35f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371783/normal_60490350e7559.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/502e40c0-c6ca-4328-a857-2ea037708faf/el_evangelio_de_santo_toms_completo.pdfIn PDF document text
    • http://kakexigodelo.pbworks.com/f/kenafoxelugixadojatavutux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c942f12-dc65-4871-b10f-fe5f30ae51e2/jumusigimibilevi.pdfIn PDF document text
    • http://lokiboz.pbworks.com/f/what_is_the_swot_analysis_of_starbucks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27373664-2cc2-44ae-af58-906fe7785ccc/48263504052.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8867e74-5314-496b-82f0-f0f1a575c8be/takeuchi_tl_26_operator_manual.pdfIn PDF document text
    • http://gosirata.pbworks.com/f/the_other_side_greatest_showman_piano_sheet_music_free.pdfIn PDF document text
    • http://visetululiv.pbworks.com/w/file/fetch/144422313/public_administration_books_for_upsc_optional.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef48dc09-5853-473d-8484-d12222202c75/tarot_card_meanings_free.pdfIn PDF document text
    • http://sofutikajen.pbworks.com/f/dr_joe_dispenza_wikipedia_magyarul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04cf7b71-7799-4e5e-b8cc-108aad944a2b/drinkwell_pet_fountain_motor_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27703f11-412b-43f5-ab43-b38575a8e948/ygs_lys_fizik_formlleri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9743412-62b9-40d7-a896-477e76a85f1a/88026443577.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08d44751-050f-4b95-b793-46de65a4e44f/4257926661.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc6ff5f4-64ce-416c-a6ca-811521af96fd/what_is_an_example_of_realism_in_art.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_off0000dc7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7C 5420 bytes
SHA-256: 9dbbaaa69c05b10c82902459bcdddb7a8e159e09e18a58e05c15afa45244cf57
font_01_sfnt_off0000eedf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDF 10800 bytes
SHA-256: a6be3ee1f7f9764ff7699e252922ed20802d67fb542bbb0ad1129f7839cfe0d7

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