Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c495e37fd517bb…

MALICIOUS

PDF

82.4 KB Created: 2021-08-21 07:23:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 96281ae69147170be917475ee465bcee SHA-1: 982501ea03ae8bdeea5accfc9cb3770bd7c1629c SHA-256: 63c495e37fd517bbb653ba3438cc4af32325f1b27cee98fd0e1c5996b41c9653
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document exhibits characteristics of an advance-fee scam, using lures related to lotteries, parcels, or large sums of money. The presence of numerous external links, many pointing to compromised WordPress upload directories or disposable hosting, suggests an attempt to distribute further malicious content or phish users. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious intent to deceive the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://badrivishal.com/media/18037948335.pdf In PDF document text
    • https://ntct.dz/ckfinder/userfiles/files/kusefajegadapiz.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d42454faae---damemafolizoluxemisor.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/xizutikirenutega.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16105c1537002a---bororir.pdfIn PDF document text
    • http://kapalishakti.com/ckfinder/userfiles/files/28341740581.pdfIn PDF document text
    • http://morgancountyoh.com/userimages/39188510424.pdfIn PDF document text
    • http://isotech.si/uporabnik/file/difenumukilez.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a908cbf3273---91081399644.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/b0sc7jp8rbsdol10qtfsmh7il4/mevuvad.pdfIn PDF document text
    • http://texmet.pl/userimages/file/bewuwiwejan.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16075ccac064f7---tufafalese.pdfIn PDF document text
    • http://divorcefinance.nl/uploads//file/tomuzosowozilakesumebopo.pdfIn PDF document text
    • http://igabana.com/upfolder/e/files/20210730025524.pdfIn PDF document text
    • http://thamdinhgiadaiquang.com/img/files/78122408579.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/ij6kvi0u5kvp2s4gf22a4cc896/67533776122.pdfIn PDF document text
    • http://debeleven.net/UserFiles/File/72155117052.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/c885938e02594fa8721616e2f26af00d/82915339721.pdfIn PDF document text
    • http://gramercy-grand.ru/files/file/rapolixajif.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d772be3f6b4---65566390154.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/ce43a0a3c2dcb72ef38f62a29aa45712/94238801179.pdfIn PDF document text
    • https://baobihungphu.com/media/ftp/file/95743240316.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/kkealjrk8pncs1ulfg66qg1gfb/zosajizivujefavez.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=s+p+letter+whatsapp+dpPDF 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_off0000df70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF70 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF782 17232 bytes
SHA-256: 36ba14a5404c33b3cad6433c307a43a2eabd78a31a809f61907eb0e5416b08d3
font_02_sfnt_off00012495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12495 10332 bytes
SHA-256: dac02a526bc9e25d6bfff74c96a663959c076df27f32bb03cd1690ff8dddf6a0

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