Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a6089ac862eb71a…

MALICIOUS

PDF

84.7 KB Created: 2021-06-26 08:58:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 6848f95cea3de3edfd69646671ace177 SHA-1: df0eb7d47be7509916599a29cb0c6d3b341d458b SHA-256: 5a6089ac862eb71a2ebb923f6e03c1cc82300a38f0cb72eaa41491be132e920f
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or malware distribution lure. The document functions as a link farm, containing numerous URLs pointing to compromised websites and potentially malicious content. The presence of multiple links on compromised CMS upload storage and disposable hosting suggests an attempt to obscure the true destination and evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://drafthe.ru/uplcv?utm_term=s10+live+wallpaper+download PDF link annotation
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/2pkanvipkfl3ojoadpkqr2ftes/lokuvavuvu.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16073d424de603---24174523435.pdfIn PDF document text
    • https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/b5rumpj857a2484duuuf43enh3/wavatidajefobuwatonikafa.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/a8oda6nvo97hq2h8gs0a7fs7v9/bifotogizijavojadawex.pdfIn PDF document text
    • http://ahdongjiu.com/upload_fck/file/2021-5-26/20210526110707897085.pdfIn PDF document text
    • http://comp-art.ru/userfiles/file/82846644699.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/lmuce6qblgfq5u0enmlpc0v8ov/rudozefofenoriw.pdfIn PDF document text
    • http://vce34.ru/attachments/file/34818444055.pdfIn PDF document text
    • https://atcotourismtravel.com/userfiles/file/44593480890.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c0b99551f3---fanegademenajexurovip.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/189de4530716331c7fda584ed9f5cc20/rabokiratososimuzaru.pdfIn PDF document text
    • https://aashianarealty.com/file/nisarem.pdfIn PDF document text
    • http://de-ko-gmbh.com/ckfinder/userfiles/files/79326237117.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/772444a9f8c5da3865f763320ac0710e/movukunozewejoguga.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607cab4a8f658---24646893267.pdfIn PDF document text
    • http://wojno-stal.pl/pliki/file/nalaxaxubegesara.pdfIn PDF document text
    • http://swaminarayangm.org/userfiles/file/99044301686.pdfIn PDF document text
    • http://drsuthichai.com/userfiles/files/44168296950.pdfIn PDF document text
    • https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/e344391d9006fd115eebb6998cee5592/guvavijeduxexomawabutul.pdfIn PDF document text
    • http://kythuatviet.vn/uploads/userfiles/file/lopazivubediwo.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075df94ea82b---52861863920.pdfIn PDF document text
    • https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/c7433c49582a38bed9cb77d081ee2e7e/1521964609.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/1kg3cnq99aft7ljlgra4it50be/fewukujaxe.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608477b2e4381---71677765155.pdfIn PDF document text
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/b506887779478aa64da7272adbb7d2e6/bedaxavovigojudoso.pdfIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e16e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16E 1760 bytes
SHA-256: 478d64aad58a46c60a63c2bd6d05d9c39068b35528f549688063ac651822ff24
font_01_sfnt_off0000e9c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C5 16788 bytes
SHA-256: 7ea7f2e83ab625331621c6201d8b49d245872ba7aee4c137862883c7f3ade050
font_02_sfnt_off000114cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114CD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00012ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CE4 10520 bytes
SHA-256: 25976b2bda1276ab4bd64a9bf0cfbd643511bbf1b8b98595cbf10f40beb270af

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