Malicious PDF — malware analysis report

Static analysis result for SHA-256 14001675373243b5…

MALICIOUS

PDF

86.0 KB Created: 2021-07-24 13:58:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: b202f43a95f7c1da12e0d49a2cd8439f SHA-1: 184cda5629b3a944a0deae4f3aab76a24700da89 SHA-256: 14001675373243b5fc4275f4fd26ed475d537d5b294b4b332ede1d20e26812a4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link farm pointing to multiple compromised websites and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document's structure and embedded URLs are consistent with a tactic to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://perfecthospital.org/FCKeditor/file/guwozawo.pdf In PDF document text
    • http://sugarfree-gelato.com/upload/file/12601234995.pdfIn PDF document text
    • http://3qbuy.com/CKEdit/upload/files/47882229681.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/pi69ab5vc9ju9u08497v0e9pik/10344229359.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160a8cb03a7898---lajobuperoxotunawu.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160aed2d950a0a---sirulalekole.pdfIn PDF document text
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/159fc2cdf8c541fc479caa01ce89bc8b/xipunesudapefajanetek.pdfIn PDF document text
    • http://ligonfamilyreunion.org/clients/9/9a/9a44987365eba454cd9b2deda39aa7c0/File/fetixikudupetoxusoba.pdfIn PDF document text
    • http://allamericannursing.com/userfiles/file/juribeje.pdfIn PDF document text
    • http://szao-spb.ru/images/news/file/zanawipofisatudebun.pdfIn PDF document text
    • http://apexhealthnutrition.com/newerac2c/userfiles/file/76030258282.pdfIn PDF document text
    • http://farmaciafasolis.eu/userfiles/files/64050244060.pdfIn PDF document text
    • http://lhsclassof1971.com/clients/74120/File/47953294063.pdfIn PDF document text
    • https://rosycaffe.com/file/8271323771.pdfIn PDF document text
    • https://hanomanberjaya.com/contents//files/92505410750.pdfIn PDF document text
    • https://delphin-restaurant.com/ckfinder/upload/files/nivagutijudonenakup.pdfIn PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/93ae5aa9568ca97b436279191efa5f34/gubuwiw.pdfIn PDF document text
    • http://kemenyseprosiklos.hu/upload/file/kaseraba.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/a39kmkdjf1737ni4lkkt279nf1/niluvewazude.pdfIn PDF document text
    • https://west-holding.com/userfiles/file/rogakipuragumomejuzaxidu.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f271295ebd---44742814308.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e482e7d7f4---27096599701.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/91987592214.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/d5bfa6d2eb8915164af6d0cd9b3d38b7/74687462091.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=babi+italia+hamilton+convertible+crib+manualPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED04 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10516 17244 bytes
SHA-256: 88f2ebeffb1fe0654ba70ab6d3e8907794a23d69399816ae33b119b41ce3f04a
font_02_sfnt_off0001325b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1325B 10684 bytes
SHA-256: 90c438913920d364f3ebdee50be9a9c33ab5fa8a5b206fa56cd6f3c574cafef7

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