Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b9c15e19c5fb452…

MALICIOUS

PDF

86.0 KB Created: 2021-03-23 01:51:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 487b44c6da51d5a7c93f5bbba2f95541 SHA-1: 95bb2756c5837329763657856debbbcf33edceaf SHA-256: 9b9c15e19c5fb4527bd6567568034e57b7d1f9fbb452d65719b5fb5a41023470
156 Risk Score

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 0.9992

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 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.
  • 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/award?keyword=budget+speech+2020+summary+south+africa+pdf PDF link annotation
    • http://hookup157.site/xetexuwuwilibidig1fsj.pdfIn PDF document text
    • http://auto-agents.space/how_to_study_for_med_surg_final8h4no.pdfIn PDF document text
    • https://pesuzipowezav.weebly.com/uploads/1/3/1/6/131636843/vojideminulenefex.pdfIn PDF document text
    • https://kotezoxeruv.weebly.com/uploads/1/3/5/3/135345651/paduloxokidemogasesi.pdfIn PDF document text
    • https://cdn.sqhk.co/seruribemoju/jdgUnm5/61406229330.pdfIn PDF document text
    • https://cdn.sqhk.co/nozelenid/uGggfgh/parib.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/dU9VgfO/zinevunoni.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/icryElG/voxejitatal.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/rIb3jjH/keto_cheesecake_bake.pdfIn PDF document text
    • http://nout-sale.site/338697216358s19f.pdfIn PDF document text
    • https://cdn.sqhk.co/lexebogefaj/4gj1fde/residence_of_living_dead_evils-_horror_games.pdfIn PDF document text
    • http://fredo.bike/impossible_space_best_weaponsg7frb.pdfIn PDF document text
    • https://cdn.sqhk.co/kufiremikaf/cngdnoN/alta_performance_pessoal_curso.pdfIn PDF document text
    • http://picsonair.com/58243359245ybqfe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nisiwanolom/hard_wired_smoke_detector_chirps_with_new_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/arm_dependson_linked_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/58942051038.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/asaram_bapu_photos.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/29911178419.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/the_intelligent_asset_allocator_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/metal_bread_cutting_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/xumuwuwata.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/nuwolorotupe.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001051c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1051C 5736 bytes
SHA-256: 5c71a7c0432231c89f677da3a0dd9de283472c7e398e8dfd918de4dde4d5741c
font_01_sfnt_off000118b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118B2 10424 bytes
SHA-256: b0630790fe584732bf50eb286ad69032c2154481a18c352faa0239d037783b71
font_02_sfnt_off00013c38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C38 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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