Malicious PDF — malware analysis report

Static analysis result for SHA-256 c19e5a42ce1cf313…

MALICIOUS

PDF

80.4 KB Created: 2021-05-24 01:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4882cfac5b5180fbcb62714de9c009b7 SHA-1: 991db4c42cded31ea8be336a78ffe346275c3d81 SHA-256: c19e5a42ce1cf313c872599531cc5702640aa3e0e90d35b387c32c672b1179cf
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 0.9993

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://gimoguvi.ru/strik?utm_term=livros+por+philippa+gregory+por+orden PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487201/normal_6030e44db230c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488349/normal_601952e48196e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411245/normal_5fc5c0008f65c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366014/normal_5fc871801de63.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426277/normal_5fca7e1721023.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408881/normal_606da45677e90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454436/normal_60511819f2080.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407793/normal_6002b8f8073ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480893/normal_5ff84c3c397c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474471/normal_603d044c5b71b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483335/normal_6044953096560.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/pojikovewijeja/advantages_and_disadvantages_of_plastic_money.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/919ee4c7-32b0-49a7-8017-581118c4273d/49725512594.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcd4c84f-d92a-4e81-abac-994b3387353b/pimob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ad2399c-25c2-4f4a-b14d-e4f7201ff2ff/que_ignominia_en_la_biblia.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/homebrew_nintendo_wii_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad8364eb-7129-4185-94aa-b2be886e50cf/ti-84_plus_ce_games_minecraft.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/62582106224.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/832c2612-838b-46f9-9195-bc21f425f37c/little_red_riding_hood_book_picture.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/tepotuzotolet.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/article_371h.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21482461-3365-4ea7-8e2f-8dbedd44933d/famous_quotes_from_romeo_and_juliet_act_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6b00568-0481-4044-9598-41699c28b82b/free_printable_math_worksheets_2nd_grade_subtraction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39ef8f14-481a-49a9-b01a-fa00b11edfe9/how_to_play_family_feud_online_with_friends_on_zoom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e069218-7729-407f-9a77-eeaaff3483e4/cbse_class_10_english_grammar_book_download.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_off0000f989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF989 5324 bytes
SHA-256: 4c0278286e116040ecd59e0fd38ee498f36057b8244162f68db62190c608aa7c
font_01_sfnt_off00010baf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAF 12348 bytes
SHA-256: 080b0f4db1dafdffb9f41bfd30bd79a5776c71aae5f410e8c3cfb4e413080c03

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