Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fec6ed469b092d1…

MALICIOUS

PDF

158.7 KB Created: 2021-03-28 11:33:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 683b38c1ec5823f805703329216c4f20 SHA-1: 1f2e8e0c98b307acc873734e702b6c1fee52eb56 SHA-256: 5fec6ed469b092d117e827d7ef9cccb577e364211fd5922d5cacb31027620250
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 5

  • 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 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://ponafet.ru/wix?keyword=auburn+riverside+high+school+volleyball+camp+2018 PDF link annotation
    • https://jasujoru.weebly.com/uploads/1/3/1/4/131483343/jixido.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380384/normal_605a386d23f91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405185/normal_600a119485607.pdfIn PDF document text
    • https://zijoganidilo.weebly.com/uploads/1/3/1/8/131856317/1b9a03fa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387241/normal_602f5d0e7e82a.pdfIn PDF document text
    • http://piwofoterif.sportsontheweb.net/banished_poradnik.pdfIn PDF document text
    • https://xuzowezawejinat.weebly.com/uploads/1/3/4/3/134378303/488773.pdfIn PDF document text
    • http://nobirejajatit.iblogger.org/novomolo.pdfIn PDF document text
    • https://jolidezebixisu.weebly.com/uploads/1/3/3/9/133997790/lodisikuxonogav_najez.pdfIn PDF document text
    • https://nofodomeki.weebly.com/uploads/1/3/1/8/131871852/3e5634f42e5a.pdfIn PDF document text
    • https://luletifolavok.weebly.com/uploads/1/3/4/3/134369244/986d9838b39c.pdfIn PDF document text
    • https://sugemisikuwev.weebly.com/uploads/1/3/1/8/131856456/giloxidifufazetib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://womutefipile.epizy.com/43768818360.pdfIn PDF document text
    • http://leparitupoxow.onlinewebshop.net/facebook_business_manager_tutorial.pdfIn PDF document text
    • http://gefuxexo.epizy.com/zajijomixurilibelosidumak.pdfIn PDF document text
    • https://a01f0313-f680-4530-87a9-ce77a10bb621.filesusr.com/ugd/ac0554_ae8e826992ec4965bac11e748ad89f8a.pdf?index=trueIn PDF document text
    • https://c7972686-9310-4d97-8ac3-15e828887225.filesusr.com/ugd/8a419d_fdf8957cda874d398dcfa90d7316e981.pdf?index=trueIn PDF document text
    • http://poserub.rf.gd/wirepe.pdfIn PDF document text
    • https://3cd6846c-369c-4875-9c63-132df726a2dd.filesusr.com/ugd/7ab50f_746580249f9e47d6abfbe57e1963ff29.pdf?index=trueIn PDF document text
    • https://28f2c00a-638b-45ec-8848-4d649cb6aba9.filesusr.com/ugd/946f28_cde783588cd74ffbb94ff66a15b87616.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_off0002330c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2330C 6296 bytes
SHA-256: fefecd2ef168e604a09bd009dc2bb073532bc3808dca0b09dc908149066838ae
font_01_sfnt_off0002485a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2485A 10736 bytes
SHA-256: c635e07fe7044307ced50f088d9e2cf8426a4b6923a51b6f1e3963683284be47

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