Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e2709dd4c296de6…

MALICIOUS

PDF

83.2 KB Created: 2021-06-16 21:00:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4b2efaef87ab0e9b81b6683950bd00bf SHA-1: 275b2f0daeaf32c4238d091f949d99930ab82ac7 SHA-256: 0e2709dd4c296de6ba53577b43ca138ad0df866a87a57bea108f527c5a70429b
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pixomot.ru/uplcv?utm_term=online+pdf+editor+remove+pages PDF link annotation
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/325d8ad303a0d394c7bac0c942632cfa/3445776248.pdfIn PDF document text
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/eb7684526b8d68a72fe9386c4064a6ec/62098583312.pdfIn PDF document text
    • https://khanikango.in/file/wujenotexojinafag.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/9dm8pr8q5bqeqnfc4gghcb0e59/ziwibanalusomogikosibo.pdfIn PDF document text
    • http://uniquecharacters.com/upload/files/xozopateliseladosetesivaz.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbd43ea80d---pibibom.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/ggadgs6lr525s0qpejek695c5f/gawavupo.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608a84a997d77---86229492074.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c3d1584cb70---wanibasiwujitawaluse.pdfIn PDF document text
    • http://cuatro-pr.org/sites/default/files/file/96442536799.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/trbervu4hghls5to8mbttos9v7/90638582939.pdfIn PDF document text
    • https://www.helpforbusymums.com/wp-content/plugins/super-forms/uploads/php/files/e085fd30ef3116e72627cf871a1c26a6/wiwabirobibotiniwob.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/52b9356e2a7ee337d730cb1c3cf8ab42/pipokunorewibe.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608be5c3a3dad---6893476790.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5763811cf---34524894637.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/160a173b96fde4---dimegejipibijididuzumida.pdfIn PDF document text
    • http://nakatka.com/files/file/15064433500.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609c99f56672b---96197063535.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
    • 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_off0000f1a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A5 5448 bytes
SHA-256: d79559e8fd4b4016fd208b960d5cf49f7952b9610fa42a226196e551db9614bb
font_01_sfnt_off00010420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10420 11680 bytes
SHA-256: 9829b20ce2436ad150e9a093216f85b982d41cf5d3bd47bdf2b685584443467f
font_02_sfnt_off00012a57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A57 16132 bytes
SHA-256: 60f53b17f7925ac1818ac9336ea58fd206fea48872b5377b70e6fb8114080afd

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