Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec6b5b0295cd195…

MALICIOUS

PDF

80.1 KB Created: 2021-03-05 22:21:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 68a30a3b1071e0e4d1f4316152329d18 SHA-1: 962fcca07500533dae245853f835396b984158a3 SHA-256: eec6b5b0295cd195ca90e3dc3a9653837ff29978e4777602ffbcc51c8bc203ea
126 Risk Score

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 0.9992

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 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://maypoin.ru/strik?utm_term=what+does+it+mean+when+the+thermostat+says+override PDF link annotation
    • https://cdn.sqhk.co/notenirikev/4CihheJ/matchington_mansion_won_t_update.pdfIn PDF document text
    • https://limuvowefegepud.weebly.com/uploads/1/3/4/5/134509231/wivamow.pdfIn PDF document text
    • https://cdn.sqhk.co/doparibi/Cjdjd8o/maf_carrefour_online_shopping.pdfIn PDF document text
    • http://sunshop.pro/clue_scroll_hard_maps_runescapeit3w4.pdfIn PDF document text
    • http://majikok.mygamesonline.org/91717595442.pdfIn PDF document text
    • https://xadigepuve.weebly.com/uploads/1/3/1/4/131454317/sepolozop-pofari.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/stock_market_trading_books.pdfIn PDF document text
    • https://dunomomavelow.weebly.com/uploads/1/3/1/4/131407267/05cab8.pdfIn PDF document text
    • https://cdn.sqhk.co/zoluxoni/9dXgeGo/wofevakutiwenofogonub.pdfIn PDF document text
    • http://boribonabone.mypressonline.com/97033035714.pdfIn PDF document text
    • https://munelexogetajax.weebly.com/uploads/1/3/1/4/131437313/a6967d836426be8.pdfIn PDF document text
    • http://warupipujamoru.sportsontheweb.net/what_makes_a_literary_text.pdfIn PDF document text
    • http://cmbclientes.com/69169267963ga1vt.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/d4jbhcS/diwexutupenuxetevajegot.pdfIn PDF document text
    • https://kawotubizon.weebly.com/uploads/1/3/1/8/131871780/7ee148e50de35.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/jjFPm6f/best_video_player_software_for_laptop.pdfIn PDF document text
    • https://fuvukajewub.weebly.com/uploads/1/3/3/9/133999399/gexuvolajutadat_bufasavanel.pdfIn PDF document text
    • https://fefumuvujudadi.weebly.com/uploads/1/3/1/6/131606087/xakigisi.pdfIn PDF document text
    • http://digtalcaliper09.xyz/is_rain_barrel_worth_the_moneykwzoj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bavatesivo.myartsonline.com/lumoxusowibusitonigud.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/51308679236.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/35080010562.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/59404209854.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_off0000fc91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC91 5300 bytes
SHA-256: 06bdee5c20f0b3cacd5d0913ef40651e05ba999322fcec111aefd13b75e93b4d
font_01_sfnt_off00010e88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E88 10468 bytes
SHA-256: 9938786d0af47492929e47f400c6ca8db24d9e0ed980d9ff90c2e65c1fc23433

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