Malicious PDF — malware analysis report

Static analysis result for SHA-256 d32a7d49f385a539…

MALICIOUS

PDF

84.7 KB Created: 2021-07-24 07:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: f8d87cd90e1b3ab2130450c13c70d004 SHA-1: 10cf3729aa156e4eb715485e97d6e5330c1b4512 SHA-256: d32a7d49f385a5392a4fae369472415b8f177b5ed49861e910337fd912dc9c34
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains heuristics indicating it is a link farm and a payment redirection lure, suggesting a phishing attempt. The presence of multiple URLs hosted on potentially compromised CMS platforms further supports this. Although no scripts were extracted, the document's structure and embedded URLs point towards a malicious intent to redirect users to external sites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://emons-verlag.net/testarea/cwsCMSlight/media/files/jeguforimo.pdf In PDF document text
    • http://weiken-rc.com/upload/files/8619134406.pdfIn PDF document text
    • http://thetuckerfamilyreunion.com/clients/67950/File/88643029924.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080cbdb7a3f8---27221746504.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0dbbc2c91---5755539766.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1310d37c7---dakus.pdfIn PDF document text
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/n38b4uu7k1u67gpcsdmg5lckhg/vuxazudadekamol.pdfIn PDF document text
    • http://gyogytornasziget.hu/uploads/files/luvibus.pdfIn PDF document text
    • https://kermanrooz.com/img/files/63354975730.pdfIn PDF document text
    • http://gentlemensquartersbarbershop.com/wp-content/plugins/super-forms/uploads/php/files/7e6eb55ff584fd1facf23d5bcc2c4322/91711485204.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608797ba650ef---zoligejosowekoteturinili.pdfIn PDF document text
    • https://qpshouse.com/upload/image/file/xutokekazap.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/phvt6kvk2ap1es0gab0hjv9sce/rasebuwisujulanaxolonul.pdfIn PDF document text
    • https://niboparis.com/upload/fckeditor/files/96962818736.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/hj8gkfc2l276b6furfq16gdc71/21111486340.pdfIn PDF document text
    • https://kompaspt1.com/contents//files/pifega.pdfIn PDF document text
    • http://timnhanhonline.com/upload/files/44476010971.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/926003c4dd8b21a64c0d94897bfbaeff/xupitilokuxegogove.pdfIn PDF document text
    • http://gsxr.hu/userfiles/file/judumopogusufulusobominul.pdfIn PDF document text
    • http://hidra.it/ckfinder/userfiles/files/810176674.pdfIn PDF document text
    • http://elfuklid.cz/foto/Image/file/39046694561.pdfIn PDF document text
    • http://kanstm.com/ckupload/files/45182743357.pdfIn PDF document text
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/fikuton.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/bd636aed80ac3a1e30388e4d843abb87/56566132523.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/1642e15fa8622a1e6a072510bdb79785/37015380251.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021071312545236.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=what+does+mtot+deposit+meanPDF 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_off0000e920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE920 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10132 16932 bytes
SHA-256: c5adf609e02e60573f3e863b68ce16d5174403135839a87f99b943e0f4b4a181
font_02_sfnt_off00012d70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D70 10504 bytes
SHA-256: 7f7150b3b446b21f27120fc1463dee017f05c38a18d79cb12eefb9a2261481d3