Malicious PDF — malware analysis report

Static analysis result for SHA-256 178a83f20f1ed509…

MALICIOUS

PDF

81.7 KB Created: 2021-03-15 10:13:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4ba1a5c4cfb5343a39d0631f793c7d1 SHA-1: bc4a6febe4eefc35bf5a252b7ddeb2a007c703a5 SHA-256: 178a83f20f1ed50910c3e91197580dac1cf5ffde694eca73754c7cc0ad012da0
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=shrek+archetypes+worksheet
    • https://lolijigi.weebly.com/uploads/1/3/4/7/134700793/kepetositakimako.pdf
    • https://zedurobarudavur.weebly.com/uploads/1/3/4/0/134018347/3408306.pdf
    • https://diwimiwiwomenen.weebly.com/uploads/1/3/0/9/130969795/2920153.pdf
    • http://poroda.site/18542432949hu934.pdf
    • http://cetakchantek.com/teduwinizufotzrsty.pdf
    • https://gotizede.weebly.com/uploads/1/3/2/6/132695714/latebi_bazesox_wuvofan.pdf
    • https://xanusikufugab.weebly.com/uploads/1/3/4/3/134371049/4c33ec2be.pdf
    • https://pipizodo.weebly.com/uploads/1/3/4/3/134352326/6729546.pdf
    • http://micrometerdigital.xyz/navifogixuvipoganomkav7m.pdf
    • https://puxikatekeji.weebly.com/uploads/1/3/2/6/132681322/visiwen-rarixadiwesut-tipizuvunofev-gewajakawi.pdf
    • http://lnstagramsecurity.net/kipibawipa340q.pdf
    • http://lnstagramcentre.net/gift_guide_for_code_veinl3o34.pdf
    • http://outputqwvk.space/free_short_film_scripts_for_studentsbg8gl.pdf
    • http://maewallace.com/free_recipe_ebook_templatep6e6o.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://3c1efe6f-6e34-41bb-a2c4-2be85dd3cb33.filesusr.com/ugd/41f880_7e66cca20821437ba793c1520eadc53d.pdf?index=true
    • https://728bf1be-24e3-4891-ba98-fedceca1a503.filesusr.com/ugd/3268c8_b19f1430986c4af79c966c4fd03493dd.pdf?index=true
    • https://bd15da75-ee01-4ad3-8b22-4778d9929f37.filesusr.com/ugd/1abc29_9a3606be0e8840639a54095f804da758.pdf?index=true
    • https://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_b68ebb831f994afc9482db4184fe8a0a.pdf?index=true
    • https://d102a0f2-001f-4998-bb0a-88ac30ac05b5.filesusr.com/ugd/771ea4_0dee803a47f4409a9b96535834a3142e.pdf?index=true
    • https://2eb5e741-fe40-4e13-9a70-20af0821b154.filesusr.com/ugd/6cf56c_d2f97d110c0644d7a9f271b4e9520fc9.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8c2.bin
31bee2621b52a9f1c9fe974cbc2c0705b41244215bf7760711c071051a26170f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C2 1540 bytes
font_01_sfnt_off000100a4.bin
865277504f285d006c25ac5259044383440d084cc1b498f8876a1f7e3c0ee561
pdf-font-stream PDF embedded font (sfnt) at offset 0x100A4 5348 bytes
font_02_sfnt_off000112e1.bin
92dee27b3f68c8cf431acaa05069ac64d02d60082f63f137491c9b02520684b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x112E1 10732 bytes