Malicious PDF — malware analysis report

Static analysis result for SHA-256 1234264a47795774…

MALICIOUS

PDF

53.1 KB Created: 2020-10-05 12:53:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3acc537e282725b57c027837c918476d SHA-1: 6d10bb401e44758e5af4decb530ff94e44c7ce75 SHA-256: 1234264a47795774da792c4b2b01ebbc8373367fb1c842fd5035ae8c942f766f
132 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lead users to download cracked software. The ML classifier strongly indicated maliciousness, and the document body contains text related to software cracking. The embedded link directs to 'https://cctraff.ru/strik?keyword=boson+netsim+10+crack+keygen', which is a primary indicator of the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cctraff.ru/strik?keyword=boson+netsim+10+crack+keygen In PDF document text
    • https://site-1036731.mozfiles.com/files/1036731/83085637719.pdfIn PDF document text
    • https://site-1037837.mozfiles.com/files/1037837/sagijeguvuxevared.pdfIn PDF document text
    • http://woketapud.mummydoctorlife.com/uploads/1/3/1/3/131398252/dopobonela.pdfIn PDF document text
    • http://vopofaket.penultimatephotos.com/uploads/1/3/0/9/130969264/kuxijapufidugoj-jomawizakog-zejejegekizudi-setobu.pdfIn PDF document text
    • http://files.joannepenn.com/uploads/1/3/2/8/132814387/d2655af1857971.pdfIn PDF document text
    • http://likegem.ericaevansartist.com/uploads/1/3/1/4/131482976/kogura_feminesez.pdfIn PDF document text
    • http://dosajopo.socalttc.net/uploads/1/3/1/4/131438121/351370.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2296af4a-c9d9-4c0d-becc-ad28e8b1935a/68593215288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f6078c9-8584-435d-baac-80615e17b633/46503158732.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4145107f-a8c6-4d33-b8c8-1dd2562387b1/72958489768.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/454a4dc7-a175-4037-aa40-d73b0402757c/46432101037.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/985859e2-8aeb-44cf-8927-085616afa1ed/vatezosurixexuretapafeba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40d61ead-2e01-46d0-8f82-19a3dc34b7eb/1159102309.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e519167-ccb8-4e34-84ea-f2218035fe20/10326269429.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A66 5284 bytes
SHA-256: 8f60d96a9181ff431ac180f310f5258c6e7a1bfbb5a00caea0d6168355288e9f
font_01_sfnt_off00007c45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C45 7828 bytes
SHA-256: 18f7f5222b3347864f027b13f958cd55851c468f27b7bc454ee7a95eb80926c6
font_02_sfnt_off000091b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91B8 13316 bytes
SHA-256: c248e9fcb9dd6b8b7732099d6ab4e1d0371917f355ffeb08bc5ef203cfcf9222
font_03_sfnt_off0000b8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8F9 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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