Malicious PDF — malware analysis report

Static analysis result for SHA-256 96582186db50cb45…

MALICIOUS

PDF

83.2 KB Created: 2021-03-10 16:16:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68a344949d19bc3e972b5e6952edae1e SHA-1: 167990648e3e14b82fb755a799fa74403b2752cc SHA-256: 96582186db50cb456de2aa2aea4695d059fd67708de8d682c8627024e3fd8548
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or link farm attack. It contains numerous external URLs, with a prominent one being 'https://xezojetit.ru/123?utm_term=launching+soon+template+psd', suggesting a lure to a malicious site. The PDF's structure and the presence of many external links indicate an attempt to manipulate search engine results or distribute further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xezojetit.ru/123?utm_term=launching+soon+template+psd
    • https://cdn-cms.f-static.net/uploads/4464715/normal_601e6d30d286e.pdf
    • http://wosozage.mypressonline.com/chrome_flash_player_registry_settings.pdf
    • https://cdn-cms.f-static.net/uploads/4388820/normal_5fd3bdd0c10fb.pdf
    • https://monokuzofo.weebly.com/uploads/1/3/2/7/132741222/587152a5b.pdf
    • https://static.s123-cdn-static.com/uploads/4468571/normal_5fca25c018b0a.pdf
    • https://pabidiwamudobav.weebly.com/uploads/1/3/5/2/135299897/951642.pdf
    • https://static.s123-cdn-static.com/uploads/4386839/normal_6005efd54719a.pdf
    • http://lipazegeboludep.sportsontheweb.net/36119033802.pdf
    • https://kawuruli.weebly.com/uploads/1/3/0/8/130814241/najibogimapete.pdf
    • https://static.s123-cdn-static.com/uploads/4426816/normal_60039b9d535da.pdf
    • http://sikevemekoma.mypressonline.com/pre_algebra_textbook_8th_grade.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://xabudavadeguvo.myartsonline.com/jumibidesidagatigux.pdf
    • https://c96d0889-97fb-4213-90a4-a08ae01970e6.filesusr.com/ugd/ed32f2_06bb39a9dce4405ba1e9cb9f4559d85d.pdf?index=true
    • https://d86a4e2f-28e0-4523-80db-af2c51430784.filesusr.com/ugd/f34823_c0c1770613ce440f819576cd49ba55e1.pdf?index=true
    • https://d2d87fd5-5f4d-49aa-ab3c-2263ce4b5d22.filesusr.com/ugd/9169d2_ae6b3f280b134251bfac6746855258c5.pdf?index=true
    • http://fojakosi.atwebpages.com/hp_elite_8200_motherboard_specs.pdf
    • http://lafagelupuf.myartsonline.com/7990569900.pdf
    • https://f38be386-5799-403b-9303-fb121113655a.filesusr.com/ugd/6f1aa7_7a1e092e0389479797677fdbd897b947.pdf?index=true
    • https://uploads.strikinglycdn.com/files/54e62798-a5b1-4abc-8d9b-bd479b1a3e24/27483788284.pdf
    • https://uploads.strikinglycdn.com/files/502e8f58-81b4-48f4-ba70-9d193f200497/terry_pratchett_audio_books_list.pdf
    • https://uploads.strikinglycdn.com/files/61066f51-5601-4260-8b46-46620537e2af/bemurodejatodobebig.pdf
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f017.bin
7a9a047c6d8301bfb20dd15cccc77267b37dc7b221bc53a8c6becff62bdde8c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF017 5216 bytes
font_01_sfnt_off000101a3.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101A3 1800 bytes
font_02_sfnt_off00010a31.bin
92254253054bfbb5315065e08421e39231850a4cff8c27882ff17532df2566f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A31 11384 bytes
font_03_sfnt_off000130f7.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130F7 4324 bytes

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