Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ce3ca11bc901def…

MALICIOUS

PDF

122.2 KB Created: 2021-06-12 19:29:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2e0931805c73780f9c84dd851307d979 SHA-1: 4aac970c3a2c2d062f9b10f2b5a8817061c9b3a2 SHA-256: 7ce3ca11bc901defa312990c62585bfc699c1074458df2b2e44a91106b14ce03
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious by ML and ClamAV, indicating a high likelihood of threat. It functions as a link farm, directing users to various compromised WordPress sites and disposable hosting domains, likely to deliver a phishing or malware payload. The document's content is presented as a search result for 'Android get list of saved wifi networks', a common lure for technical support scams or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • 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://synerhu.ru/uplcv?utm_term=android+get+list+of+saved+wifi+networks PDF link annotation
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c361b3c0da3---31534369659.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160abd8665cffc---23600871645.pdfIn PDF document text
    • http://canxetaidientu.com/images/file/noxuviwebalirodapax.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/dec5efab86177af6077ac9fd6a53c512/xuwevotugevo.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/ff4cd13c2e8c6019244962794b771bd8/23776952469.pdfIn PDF document text
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081876c306ae---sepojewetunolisu.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/d0ib3ju26pasccioo4costkug3/sikariwajur.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/fb8ace05eec8e7d0091cb3ff398bc01a/85087827523.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160b73a4c282b6---61091287456.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/86beaf03810923a803c0bec68d3b5f9b/ribivi.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f6edb8b84---23676437585.pdfIn PDF document text
    • https://hpsoft.shop/upload/files/74885958515.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c46817d6477---lixer.pdfIn PDF document text
    • http://webinside.pl/userfiles/file/71979324840.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608f0a28786c5---godopodudexamadavep.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/708c9e431a4c330794085ed5a8e50f73/tevepomevonigino.pdfIn PDF document text
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/d5ded18493a4da9c3dd345e25ad6db25/likureze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a2a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A2A3 5280 bytes
SHA-256: ef374c7e8a615fd1003fdce5bb8a6da9cf649f815a1f4fa1490b299c256a46b0
font_01_sfnt_off0001b4c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B4C5 11364 bytes
SHA-256: 34ef6386369f41a7d6ce02f52d2243d44cb54979e97d4a742122a23f1363bcf4