Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdfa05577f80d122…

MALICIOUS

PDF

82.1 KB Created: 2021-09-01 17:13:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 743108d62f8d901b00698a41118cf5e1 SHA-1: 7c7cf8f7e11322362d16036b4b327ef4ffc533f1 SHA-256: bdfa05577f80d122b44d1904213dcafa2635ce820583af6dc58b25bda2929801
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic indicates the document's content is designed to trick users into paying fees for a non-existent prize or parcel. The numerous embedded URLs, many pointing to compromised CMS uploads, suggest a link farm designed to distribute malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/0ee1dbf2615cd1acb427f1d44f077850/1076647728.pdf In PDF document text
    • https://masihpt1.com/contents//files/jivedajisipejovat.pdfIn PDF document text
    • https://saikekanglun.com/filespath/files/20210822053405.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/sj1i1bu5u3d0dqcl01gqjqad0l/52670239429.pdfIn PDF document text
    • https://aviseco.ro/userfiles/file/mizevisebozoruruza.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/cd0dd08e968eebccf46a9b2955592652/gusimumibojumegaxagiw.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16085cb1e1f663---vasugoxu.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/ncqdjkojf843heg4sjmqu8des0/32366411666.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073772f010ef---wapodetikobomumasokiwiri.pdfIn PDF document text
    • http://1careglobal.com/upload/files/19529980206.pdfIn PDF document text
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/c220e20cd438082a9d953d1f6def9f18/22375158741.pdfIn PDF document text
    • https://rocksoliddesigns.biz/userfiles/file/24173881662.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609630462d302---57724405215.pdfIn PDF document text
    • http://www.awakohchang.com/image/upload/File/6102139832.pdfIn PDF document text
    • https://channeloflove.com/ckfinder/userfiles/files/90375904801.pdfIn PDF document text
    • https://annjulieskarpmo.com/userfiles/file/94798512979.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16094281c4ae3b---govorumafaduretibubogu.pdfIn PDF document text
    • http://afgventuregroup.com/cfiles/file/55074135206.pdfIn PDF document text
    • http://thebeautyofdesign.nl/ckfinder/userfiles/files/7291173342.pdfIn PDF document text
    • https://matteagianotti.ch/userfiles/files/48276960734.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16070a046c7dd3---godujobunuxiradufuzis.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=transformers+identification+and+price+guide+pdf+downloadPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f2ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FF 11112 bytes
SHA-256: 16603f1ff28e27878a2fff361147495164cd3aecbd5dc43ecce150f176318def
font_02_sfnt_off00010cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CC2 17476 bytes
SHA-256: 523b643a07cab44a01e59a4171bc257ae02f2a2c7791db25ded0667a0bd92f42

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