Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dce62aad98ec4eb…

MALICIOUS

PDF

84.3 KB Created: 2021-07-08 03:45:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 49e5848df83463d17979718fc9294992 SHA-1: 6ccd5493e8aa0b117309abf9e2cfcd27a64f3296 SHA-256: 9dce62aad98ec4eb47085e34bb0f3533bd0acc5f1f5fd7558f474b467c44d386
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous links to external PDFs hosted on various domains, many of which appear to be compromised WordPress sites or disposable hosting. The document's structure and heuristic firings strongly suggest it is designed to trick users into believing they are owed a prize or funds, which can only be claimed after paying a fee.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://huntic.ru/uplcv?utm_term=self+isolation+delivery
    • http://vnplastic.net/upload/files/gesewune.pdf
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/1606c868254d94---36663054112.pdf
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/b462a42c2f21547f6caf84696b8e2e63/ruligusinolefazeletanuv.pdf
    • http://jaatkinson.com/userimages/76811376398.pdf
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/fd29193f9bb5185f6df427f831e5b631/nuxux.pdf
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c6593be36b2---riwigonoxomok.pdf
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608624ca9de5b---52425573557.pdf
    • https://laser123.com/geektic/files/roxogoselizibe.pdf
    • http://bigxra.com/uploadfile/file/2021051815473773499.pdf
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/p9ko2d9qlepru8abqurm7jkqp1/36833457798.pdf
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/16094802ed3e82---85737689804.pdf
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160aa9aae9cb4c---30840481359.pdf
    • http://chamdure.com/DATA/files/pajodawepalepumarutu.pdf
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/1c2704d6cacfac01c8fd97fed44c9797/bedaxodelofufawevubibawan.pdf
    • https://korzayithalat.com/spot/admin/fckeditor/userfiles/file/97580255331.pdf
    • http://nuraski.pl/wsg/userfiles/nopegen.pdf
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b10932c0cc1---mufug.pdf
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609413680884c---52932230600.pdf
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607d523cb9299---gezusotomuvumirikuvapo.pdf
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8bac05939---tojuramemiriwudefedasidul.pdf
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609753b60d075---44805953456.pdf
    • https://jmtours.co/aym_image/files/87020898394.pdf
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e87b.bin
baa75042e107bc28f0a532055ef0cfa133f14c5b6dcda6063d05349aa942012a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE87B 16496 bytes
font_01_sfnt_off0001138e.bin
008ac22b4b84e652def8d8139650c8e3605a5015a7120c0f2cf14ad52a30e797		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1138E 10604 bytes
font_02_sfnt_off00012bf4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF4 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.