Malicious PDF — malware analysis report

Static analysis result for SHA-256 a865ff764628cfd2…

MALICIOUS

PDF

94.0 KB Created: 2021-06-28 03:42:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 53663582b3260b7e2731a55b5d20825f SHA-1: bba01a18ef97087f9b6c594a2ba06f96f8213694 SHA-256: a865ff764628cfd2fdfbc2870a11b33664041f071bf8ef3a47dbe7cf90b09005
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was identified as a PDF document containing an advance-fee scam lure, likely related to lottery winnings or parcel delivery. The document body is heavily obfuscated, but heuristic analysis indicates it is designed to trick users into parting with money or information. While no scripts were explicitly extracted, the PDF format can embed JavaScript, which could be used to facilitate the scam by directing users to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9786

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 http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/32470087945.pdf
    • https://alatheir.com/atheirwsfiles/file/polarazopojak.pdf
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/6f08250ee31fad9195daf05705d9c6a7/zovukefevub.pdf
    • https://designcoordinators.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607588f8bc9d8---famudugizepaji.pdf
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c694f88c622---foboxoxu.pdf
    • https://123natura.com/stockages/files/65620870139.pdf
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092b64165816---maxifigunorumo.pdf
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/rpiekj3rr2bt3ssscf2895n9h0/luzewawolosu.pdf
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/f0k5l425ctor4ngk4phrftv572/palomojulefipojemeli.pdf
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/676361273b777f08258345bb0c9297f6/nojovokeru.pdf
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086a5de50e8b---giduleloxopiwuzetenili.pdf
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a90448f3f25---88891312724.pdf
    • https://teenvolunteerhouston.org/wp-content/plugins/super-forms/uploads/php/files/75e109c9c76ba91e55f035be6d224aac/gipijonu.pdf
    • http://drsuthichai.com/userfiles/files/nusekazazibeta.pdf
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607598eb8aed6---69373031643.pdf
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/c04a911d65f40ae6f1f333a90650929d/zazodimujazasiwire.pdf
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7480a6bdaa---rarum.pdf
    • https://alice-immo.com/userfiles/file/bugulaxotopo.pdf
    • http://pettwayfamilyreunion.com/clients/39389/File/19639387139.pdf
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/908dfc0b651aa8a8a7b77121357baf84/63556342476.pdf
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092f60c578fb.pdf
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/cd95b91677ae9decc85f4a1477396846/21668517119.pdf
    • http://www.pattyn360.com/upload/forum/files/4459475717.pdf
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/ai5vqa5gufpi7gkni575t3gecb/jodagajarigosifi.pdf
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075d5c81cbde---75855697580.pdf
    • https://bestrecycledautoparts.net/images_i/file/13928461843.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=the+live+net+tv
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9da.bin
789c5e144cf8cb6de2ce6263b61d468bfc0a6b648fe14d82ed655103a90627a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DA 9684 bytes
font_01_sfnt_off00010ecd.bin
d54efdd9810e372844ab17edb6b7045c197a6f1f97e1e9326b1dc7eced2dd8f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10ECD 17612 bytes
font_02_sfnt_off00013cb2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13CB2 16792 bytes
font_03_sfnt_off000154c3.bin
fcca37035df06e555c2991ff65faa0e8497ca6423bee408ebc46b3aef925b516		 pdf-font-stream PDF embedded font (sfnt) at offset 0x154C3 16144 bytes

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