Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c08c779579d2bf1…

MALICIOUS

PDF

80.5 KB Created: 2021-03-24 05:48:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e1d57c7ca25310e6b599b162ed0557e4 SHA-1: 54020783705d84d188bd8e4cc243f11dca418b45 SHA-256: 4c08c779579d2bf1e5543c793bc903dadf6fa69c1b15995e9a962a937c60ba98
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://xezojetit.ru/award?keyword=descargar+libros+de+vargas+llosa+pdf PDF link annotation
    • https://cdn.sqhk.co/zetuzire/M2fZ8hg/27900837392.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444371/normal_60544f708eff1.pdfIn PDF document text
    • https://cdn.sqhk.co/tijatabov/ijheOXS/bubble_guppies_fire_truck_song.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxarogajib/dYQgegf/fonts_for_iphones.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/gjdihja/dexewusapipad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455174/normal_5ff424e40c21f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470385/normal_601dc56b62825.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475588/normal_5fe26dec4fe9c.pdfIn PDF document text
    • https://cdn.sqhk.co/getabemuto/tyoMgc7/fijuporax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381978/normal_602fd7a5c2809.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367621/normal_5fe99d4234d98.pdfIn PDF document text
    • https://cdn.sqhk.co/xojurolaruk/ijbHPtd/faxotoripibevav.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/Mwoih0d/19186957482.pdfIn PDF document text
    • https://cdn.sqhk.co/molavagew/cCGhbhd/basketball_battle_hack_version_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383794/normal_60447a330a704.pdfIn PDF document text
    • https://cdn.sqhk.co/dolafita/GzTujeL/vitamin_shoppe_cbd_oil_reviews.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372360/normal_6000d33c260bb.pdfIn PDF document text
    • https://cdn.sqhk.co/tajugajobib/ibia2KN/62534007128.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/6ab883b8-1557-4611-8988-900365c0aa4f/nafemezepozefo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6d8597a-9973-47af-86e0-00e8dcc1783d/como_hacer_un_a_word_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35fcc613-a72b-4466-b65d-46d7436044e7/lekagajusumerajasafe.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/reynolds_cookie_baking_sheets_parchment_paper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce33d82c-4188-4f44-b9ec-1ee2cce19334/the_vampire_diaries_season_8_cast_sybil.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/redujaxekidotuviwufit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9779ec31-16b5-4ea3-8b6b-debc2e2d1013/age_of_discovery_dinner_worksheet_answer_key.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_off0000f908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF908 5520 bytes
SHA-256: 54273f392ac38bbe77d2bb33f398512eed3f9866d3677aab5ef50bc464f342d9
font_01_sfnt_off00010be2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE2 11852 bytes
SHA-256: c38e9c21a3392e6ede0a22098c8cc4e246a4d7588d2314197e17bbf2dbf98887

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