Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e2edc380ee8e927…

MALICIOUS

PDF

73.7 KB Created: 2021-09-15 23:23:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 96c9eca4432697f36e498ed7bb4dacf4 SHA-1: 755d7620e2340c0da55c3a3824a3b4dbd3703316 SHA-256: 7e2edc380ee8e927eda60e0e79467dd7b3421c4c3d80e691b64f9431566a6d9f
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains a link farm and embedded URLs, suggesting it is designed to redirect users to malicious sites. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is intended to prompt the user to make a phone call, a common tactic in phishing and tech-support scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://kildevangen.dk/files/8931657819.pdf In PDF document text
    • http://jikaramen.com/uploads/files/11077234449.pdfIn PDF document text
    • https://073741256.com/uploads/files/202109041306249477.pdfIn PDF document text
    • http://areawifi.com/DESARROLLO/userfiles/files/zarukisomala.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1613016da64828---jubireg.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16137b69716b57---gasikosozogem.pdfIn PDF document text
    • http://hcstonetw.com/uploads/files/202109112107466932.pdfIn PDF document text
    • https://trvstore.com/userfiles/file/vuzomagupenexepinixobin.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ae736477bd---33317842368.pdfIn PDF document text
    • http://xn--3bsx3iw22bmot.com/filespath/files/20210913134421.pdfIn PDF document text
    • https://thailonghoang.vn/upload/files/98047550072.pdfIn PDF document text
    • http://klpa.net/userData/board/file/53564593230.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/5rghu3p9tsveeje81u2ofnp1mj/95336794572.pdfIn PDF document text
    • http://wgadget.com/file_media/file_image/file/98130999847.pdfIn PDF document text
    • https://curtain.jinware.com/upload/files/66608456814.pdfIn PDF document text
    • http://studiomontironi.eu/userfiles/files/rijakosawabez.pdfIn PDF document text
    • https://satesayap.com/contents/files/54506054295.pdfIn PDF document text
    • https://nepalipublisher.com/ckfinder/userfiles/files/4070417789.pdfIn PDF document text
    • http://locke-3c.tw/uploads/files/202109052221516049.pdfIn PDF document text
    • https://taxforce.nl/userfiles/files/xatutunivebu.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/161301ad490c26---39490285102.pdfIn PDF document text
    • http://ore-processing.ru/d/files/wunuben.pdfIn PDF document text
    • http://webinaris.org/ckfinder/userfiles/publics/files/16350206412.pdfIn PDF document text
    • https://angem.fr/userfiles/file/97911498242.pdfIn PDF document text
    • https://www.carnesvarejo.com.br/assets/ckfinder/core/connector/php/uploads/files/renojidaf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=uk+used+iphone+12+price+in+nigeriaPDF 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_off0000bb93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB93 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d3aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3AA 11020 bytes
SHA-256: 9bb037f4223de00afa7e6499a3404530551a6c7fd053a57400fbf0870c0057a5
font_02_sfnt_off0000ed1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1E 17200 bytes
SHA-256: 990fab136fbcfc51b6ab760ef7ecef4b48f607cf0b158e6855213e3ead665f1b

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