Malicious PDF — malware analysis report

Static analysis result for SHA-256 17414708b27e33f9…

MALICIOUS

PDF

120.0 KB Created: 2021-03-30 06:51:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f068ae2c9882ab0a0f5dd420a8b3cfa6 SHA-1: dd9010d03a70a8a0811e900a1de96d368a060403 SHA-256: 17414708b27e33f9479971fb55f7aa9fa24b1b5ded99746fa5d08dca09335f1e
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 0.9996

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://midufefew.ru/wix?keyword=active+viewing+guide+questions+iron+jawed+angels PDF link annotation
    • https://fiwirozubaxezu.weebly.com/uploads/1/3/4/6/134659856/c63b34f0918429.pdfIn PDF document text
    • http://idealicaufficiale.website/physiotherapists_pocket_bookjlx0v.pdfIn PDF document text
    • http://idealica-official-it.website/tuxuvolegolan1sxx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443602/normal_60126133c4b62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370068/normal_605c974c44b7b.pdfIn PDF document text
    • https://gitijekukojijot.weebly.com/uploads/1/3/4/6/134626905/1520637.pdfIn PDF document text
    • https://mizunilido.weebly.com/uploads/1/3/4/3/134352057/1b738fa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368954/normal_5fe75e836c4d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469617/normal_6000914c13219.pdfIn PDF document text
    • https://faxipanonuk.weebly.com/uploads/1/3/4/3/134352952/giwopiz.pdfIn PDF document text
    • http://ziwotixog.22web.org/cutting_edge_pre_intermediate_vocabulary_book.pdfIn PDF document text
    • http://idealica-columbia.site/solutions_manual_organic_chemistry_francis_carey1hw9h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479718/normal_5fdaab57dc4c5.pdfIn PDF document text
    • https://vugilove.weebly.com/uploads/1/3/4/2/134234765/36a85.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tugevajelijivo.rf.gd/dotiwamurixepovuluvek.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/konigiwi.pdfIn PDF document text
    • http://redejepivu.rf.gd/free_sheet_music_for_brass_band.pdfIn PDF document text
    • http://kesitebogi.epizy.com/pumozonusopukuvepujufam.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/broilmaster_p3_owners_manual.pdfIn PDF document text
    • http://wiwazisumi.rf.gd/bohemian_rhapsody_piano_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/62727077447.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/kumoj.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/asterix_and_obelix_free.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19647 5448 bytes
SHA-256: 0e694fb379bf39338fde6ad77bbdc86126dc2b57629ce01195735214afbc8038
font_01_sfnt_off0001a8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A8EF 11616 bytes
SHA-256: 967ce7dc2c27fdc63adcbba7dbcd1ca8a039ac6615a03bc07d214023c5d8db2a

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