Malicious PDF — malware analysis report

Static analysis result for SHA-256 210a9aef81511034…

MALICIOUS

PDF

72.7 KB Created: 2021-03-08 05:41:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ad94af93c17db56b47aada3bc4372b20 SHA-1: ff18809a40f228c366e6e739e77e986d3a177b31 SHA-256: 210a9aef81511034a09adc48696b9563dc89222973fa753e42df8832d7655c25
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/wix?keyword=isp+decimator+manual+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473637/normal_6044f7d7aa8bd.pdfIn PDF document text
    • https://lukazerud.weebly.com/uploads/1/3/4/3/134343231/sunuxe-kelopuvadam-wixiwemotiri-zudeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377407/normal_603554422e412.pdfIn PDF document text
    • https://jaroxifapo.weebly.com/uploads/1/3/1/6/131636664/4984232.pdfIn PDF document text
    • https://fakavenudir.weebly.com/uploads/1/3/4/0/134042443/jodurazikik-pijivizalezugu.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/ifygi3M/meteor_hit_retro_arcade_space_shooter_games.pdfIn PDF document text
    • https://jabibodusap.weebly.com/uploads/1/3/2/6/132681053/walekafuni_rejiraduko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379982/normal_5fd107c4d0505.pdfIn PDF document text
    • https://zivexipoter.weebly.com/uploads/1/3/1/4/131483036/7096178.pdfIn PDF document text
    • https://cdn.sqhk.co/nepajenine/hfH9jeJ/86264612636.pdfIn PDF document text
    • https://bupaduzisi.weebly.com/uploads/1/3/4/4/134475958/xoxukunis-vavek-rosikolizab-tuxonovoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462694/normal_5fdb7c9f1f2dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482403/normal_6003f1373357d.pdfIn PDF document text
    • https://pelepidavivi.weebly.com/uploads/1/3/1/4/131454492/889966.pdfIn PDF document text
    • https://vilotirupoj.weebly.com/uploads/1/3/5/3/135328316/c82f526.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2a4b29e6-a790-453e-81e7-e8b9caf2c27b.filesusr.com/ugd/bf0735_0de7f6410de04b93b746a4611eaa9db8.pdf?index=trueIn PDF document text
    • https://cfff6b0e-fc0f-4d9c-a983-c0e60c8b2bfd.filesusr.com/ugd/c637e3_e1c4d295564246259005d2d583b9f664.pdf?index=trueIn PDF document text
    • https://769966b8-4adc-437e-bba8-f198cf6e171b.filesusr.com/ugd/41a0b6_65436cb6db2d4994a499eb890f2a7d16.pdf?index=trueIn PDF document text
    • https://a9864912-ad24-422b-99f3-2d90f7703507.filesusr.com/ugd/d6af85_70a5d702c8d64174956af538cb975de4.pdf?index=trueIn PDF document text
    • https://393102e6-89af-4738-8cad-89662dba8dc5.filesusr.com/ugd/33a16d_d1bf386228d045c0b766c5c963d5e442.pdf?index=trueIn PDF document text
    • https://c1f973cf-d719-4acb-8f9e-cd83ae4fb94d.filesusr.com/ugd/057766_6390da5158ea41b9be907972a9d59911.pdf?index=trueIn PDF document text
    • https://77701ba7-c5ad-4750-ab17-5b03548f7fc0.filesusr.com/ugd/9a242c_34598252eafe4383916f2bbe7ecea7ba.pdf?index=trueIn PDF document text
    • https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_e0a0ecdbba234262ab66ff15f384f174.pdf?index=trueIn PDF document text
    • https://8b83d164-5e56-46cc-b941-48f48810ddf3.filesusr.com/ugd/76ce43_fc6216dcb79f43ee88eedbce44ddbc1d.pdf?index=trueIn 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_off0000e0d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D9 5236 bytes
SHA-256: 804eec38c2d51ed858883bb923d915be5d81af510d8015fd62cbb676fb6531a2
font_01_sfnt_off0000f294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF294 10228 bytes
SHA-256: 408ed03fe88501b29e4cf780a91ce5e76a4d8e5455c388d6e4cde0d9123e3e11