Malicious PDF — malware analysis report

Static analysis result for SHA-256 c08e9bc2d5b116af…

MALICIOUS

PDF

92.1 KB Created: 2021-03-24 23:01:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f3ee8567d67296d2872cd865fed1f4e9 SHA-1: 522809e915e02bae3ad2f8108e4258d3de64ca08 SHA-256: c08e9bc2d5b116af765dfcd19cc8bf5118e83160c8f8409eba15528d40725b64
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 0.9989

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://jumiwimov.ru/award?keyword=django+javascript+integration+ajax+and+jquery+pdf PDF link annotation
    • http://lazotub.mywebcommunity.org/zokonos.pdfIn PDF document text
    • http://xunopapazugatar.medianewsonline.com/small_compress_ppt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475854/normal_5ff8c0f78bb87.pdfIn PDF document text
    • http://gojodefigogizib.iblogger.org/yahtzee_junior_score_sheet_printable.pdfIn PDF document text
    • https://zezupivipikoko.weebly.com/uploads/1/3/4/5/134596705/165873.pdfIn PDF document text
    • https://cdn.sqhk.co/mamabukalom/nibQbvm/zacro_mountain_bike_pedals_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420230/normal_5fd11a7261bdf.pdfIn PDF document text
    • http://warupipujamoru.sportsontheweb.net/los_tipos_de_funciones_del_lenguaje.pdfIn PDF document text
    • https://ribupawotomimam.weebly.com/uploads/1/3/4/6/134694318/c370d56d.pdfIn PDF document text
    • http://viruxego.mygamesonline.org/spivak_solutions_calculus_manifolds.pdfIn PDF document text
    • http://vobajujabu.mywebcommunity.org/vurepusemep.pdfIn PDF document text
    • https://bivilasafufi.weebly.com/uploads/1/3/4/6/134689398/b27688.pdfIn PDF document text
    • http://vorugakolijek.22web.org/saxufitumebesejewifuja.pdfIn PDF document text
    • http://ruvenebigolusep.mywebcommunity.org/kepijesomageba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370304/normal_5fc928e60b321.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447086/normal_600e287504cd2.pdfIn PDF document text
    • https://cdn.sqhk.co/pifonode/gjcvjja/wulesosedusimagexukas.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/992405.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/hwhDha2/ice_cream_dessert_shop_fortnite.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
    • http://zetulinug.rf.gd/10384926322.pdfIn PDF document text
    • http://jamenajiko.myartsonline.com/45421819389.pdfIn PDF document text
    • http://nixomirorubu.myartsonline.com/fundamentals_of_general_organic_and_biological_chemistry_solutions_manual.pdfIn PDF document text
    • http://xifabemifuxiza.rf.gd/meralgia_paresthetica_stretching_exercises.pdfIn PDF document text
    • http://baxodivol.rf.gd/4011554377.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B95 5604 bytes
SHA-256: a7cd9ead421c877e7f923671dc18d864528fb0c52273d174cadb15d43b7eae44
font_01_sfnt_off00011ec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC4 22384 bytes
SHA-256: aa058207d32e19d4724c1c6f4845eb572dfeb86d9083d5b7f4aa0360733b7e5d
font_02_sfnt_off00015243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15243 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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