Malicious PDF — malware analysis report

Static analysis result for SHA-256 116e682426a2f9f0…

MALICIOUS

PDF

98.1 KB Created: 2021-07-10 06:38:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 32efab42d55ad2c865aa0d66701f562d SHA-1: 56c55919e30fe72ddc56f137333f79f88c99d041 SHA-256: 116e682426a2f9f0865dd98949c548449707d62972f4ed5261e8c3fa8f1f981a
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a link farm pointing to numerous distinct hosts, many of which appear to be compromised WordPress sites used for hosting malicious PDFs. The primary purpose seems to be directing users to these compromised sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/d0cff3f8c5be513d6519d12666f5e211/dubasasegite.pdf In PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd0e753dc1---99536550101.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/fb56c11add870f4c0263542d1e63707b/rosuf.pdfIn PDF document text
    • http://innotec-industrie.be/userfiles/file/99023859412.pdfIn PDF document text
    • http://poorclarescork.ie/images/nowote.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fcae08e446---bekeretinenerelobiderozuv.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609727250ac25---93809603230.pdfIn PDF document text
    • http://fouladsazanco.com/Upload/file/zinijezixaxuwuvavujo.pdfIn PDF document text
    • https://www.rekalibracija.com/wp-content/plugins/super-forms/uploads/php/files/5c95d243b40194702ad2b62ea2309fba/kamekegofigeremawizuj.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/adf07996cff20e5f94edf1a51b7ef2ac/narukenegatojuduwalezij.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/b70ef82075d21d44079c4212747d5692/77730828383.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160968e27cfc45---fipuwulotomakoxuvipu.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/7a48bb5f7f20e6c94e412ad0eaec57c7/bomesogonemotebonezezavij.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/h09oofnqr87res1q64a5avlkmg/fasobazij.pdfIn PDF document text
    • https://juvelyrikoscentras.lt/Files/file/57475732749.pdfIn PDF document text
    • https://melz-feu.ru/upload/54555921298.pdfIn PDF document text
    • https://gbagencement.fr/uploads/file/pobedekabuweginaz.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160721a7f71e1a---18970315063.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/be94e6b1226c5fe01fbb4a5094a21524/bixerozixajil.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/0fa5c8d7d077a3201e77ce7d4ce5cafd/geruda.pdfIn PDF document text
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/cn1ki1hui0c755vv0f3tdllqq6/pulub.pdfIn PDF document text
    • http://fzsvybbs.at/userfiles/file/wosanumimikusekogixoz.pdfIn PDF document text
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/6e359fb35b6aac0632e3c3055942e8c3/46098698633.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=the+little+prince+disneyPDF 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_off00011e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E2E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13645 10404 bytes
SHA-256: 10dc1d924879d2e2a41ab12ff80175f712eef066e73d82b91340e6177b4f5d1d
font_02_sfnt_off00014dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DC4 17732 bytes
SHA-256: 995a4c3442f90b3075bca50a2a681c3dec79ef52bb5150bad1b788917dca33d9

Open this report in the interactive analyzer, or submit your own file for analysis.