Malicious PDF — malware analysis report

Static analysis result for SHA-256 a81ea7b10c86085c…

MALICIOUS

PDF

116.2 KB Created: 2021-04-02 15:00:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: babf4a894d028741ede77afde9bc70ff SHA-1: de6c5ab27a05b8e68a11fd0f317f1cf574c64da4 SHA-256: a81ea7b10c86085cce1c9dd0d2c2ad87abe84945095144629ee4627db32a0b4e
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 0.9996

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://leonvi.ru/strik?utm_term=what+is+the+latest+coronavirus+news PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412588/normal_602dc6dcf2393.pdfIn PDF document text
    • http://oneplusonemain.xyz/halloween_theme_song_sheet_music_clarinetvbdg2.pdfIn PDF document text
    • http://bestunew.xyz/berserk_manga_deluxe_edition_volume_2o4md6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502175/normal_5ffc3292d66d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424024/normal_5fe02803b7b41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458389/normal_602fef1557fb8.pdfIn PDF document text
    • http://kiwedoro.66ghz.com/pagovusugabetibuwulagoju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478127/normal_601b6ed661f6f.pdfIn PDF document text
    • http://pujugekan.iblogger.org/echo_pb-250_blower_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380675/normal_603234c066aaa.pdfIn PDF document text
    • http://sovaxalute.22web.org/harry_potter_goblet_of_fire_trailer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465131/normal_6056d97437c2e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/saxefi/what_is_the_weight_limit_on_a_graco_pack_and_play.pdfIn PDF document text
    • http://zowomazo.epizy.com/ganoderma_lucidum_cultivation.pdfIn PDF document text
    • http://ditiziwux.rf.gd/pufazobijiropafefufaf.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/easl_guidelines_for_alcoholic_liver_disease.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/autotransformer_starting_method.pdfIn PDF document text
    • http://petibek.rf.gd/72857808559.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/pathophysiology_of_seizures_and_epilepsy.pdfIn PDF document text
    • http://wasokutuv.epizy.com/what_are_the_3_types_of_digital_media.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104DB 39172 bytes
SHA-256: af8bb1375312114aa129bd526823e059314dfa274a84982c8257beb8a3b3ad41
font_01_sfnt_off00017d6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17D6B 4932 bytes
SHA-256: f102e942b554202e2791daf80db531fb5738f31da11547e2f778a5d4f8407c02
font_02_sfnt_off00018e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E3A 11100 bytes
SHA-256: 450939f20e1eb509f9f9ce23f553ecc6843f162bd3d08c5e2780ad1e013ca44d
font_03_sfnt_off0001b429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B429 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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