Malicious PDF — malware analysis report

Static analysis result for SHA-256 fce4ae435336be22…

MALICIOUS

PDF

78.1 KB Created: 2021-02-13 13:45:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b76efa6ce916bc72e6e5ec61db7c073b SHA-1: 51d86c384334465f15d4bb3cccf0f3805f0e4629 SHA-256: fce4ae435336be22f48e5e4eaadf5502113f2bb9a4f572751a3f4da670a65e6e
186 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/123?utm_term=street+fighter+sagat+shirt PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374704/normal_60150d6b7fbf4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372723/normal_6020756997f41.pdfIn PDF document text
    • https://kaxamutibe.weebly.com/uploads/1/3/5/3/135348628/zejilamesa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393358/normal_5fc5a93ac2c03.pdfIn PDF document text
    • https://lixubirenolona.weebly.com/uploads/1/3/4/6/134669397/kesuzazolozexe.pdfIn PDF document text
    • https://lemagijazifar.weebly.com/uploads/1/3/2/7/132710763/xakimezode_jejate.pdfIn PDF document text
    • https://cdn.sqhk.co/vozeseseber/2ic1xwo/69976256880.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427523/normal_60110e8694115.pdfIn PDF document text
    • https://cdn.sqhk.co/zovitamojim/gj4T3VA/harvest_moon_poolside_lyrics_traducida.pdfIn PDF document text
    • https://lalojitewimagix.weebly.com/uploads/1/3/5/3/135304200/zuwuraditawis_fakatu_seven.pdfIn PDF document text
    • https://cdn.sqhk.co/jivaduzar/bHigADH/bkash_app_login.pdfIn PDF document text
    • https://dofikusoru.weebly.com/uploads/1/3/4/4/134472045/pejisuve-vezivamemokeku.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501961/normal_5ff938bbe1004.pdfIn PDF document text
    • http://circus.market/lagu_salah_apa_aku_uyeshareo9849.pdfIn PDF document text
    • http://fherixq.com/31318778902r6h0d.pdfIn PDF document text
    • http://bubble1.space/playerunknown_s_battlegrounds_license_key._txt_freexu4dj.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
    • https://s3.amazonaws.com/kujesulad/kafubakesarowubug.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_off0000d3c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C2 3664 bytes
SHA-256: c48f59aa493b7cda5d9c2e1273604aaa05574deac340b6803ff5e2b9e86a3a12
font_01_sfnt_off0000e0c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C9 5100 bytes
SHA-256: ee8e4841807754f5804f9b23e3987f3b8c34d167afa04a2eeb23a9a328a1d552
font_02_sfnt_off0000f213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF213 6296 bytes
SHA-256: 20125e8b36a9ce63619a490b04adc365a276cafca688b3ffc55862572b205a34
font_03_sfnt_off00010293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10293 11160 bytes
SHA-256: 642c882dd2c4f0d1a1c5709a9793ec5a0b927d601c2c14cfbafc16ca5466a830

Open this report in the interactive analyzer, or submit your own file for analysis.