Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96d2ec07a48fc64…

MALICIOUS

PDF

88.7 KB Created: 2021-08-18 00:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: a9b09716a85ad413cb60da636caf93fb SHA-1: c1b412ebaf50f4c665bc543a2aca5c6c548c660c SHA-256: d96d2ec07a48fc647141f3d6ebac559705c076fee8420b364f950a7303a17ac4
156 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a common PDF-based lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://pixomot.ru/uplcv?utm_term=garena+free+fire+bluestacks+controls PDF link annotation
    • https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/2p7ll1i5fq23viiddm520t1n91/pakifevejanulesosuwi.pdfIn PDF document text
    • http://lesen-und-schenken.de/userfiles/files/31657668350.pdfIn PDF document text
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/17m7bn20u77bth13mfm58ul0nc/67788280769.pdfIn PDF document text
    • https://mercerapparelss.com/userfiles/files/38714895515.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/57bfe1c937423905d027613dff475f8a/99458708912.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/hqomd3pn8mq49ao91408kpjvcg/85679069627.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/161149cb9e575c---64857496323.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afd87d62dbd---58176516171.pdfIn PDF document text
    • http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16077096081594---35177579358.pdfIn PDF document text
    • http://temple.mo/userfiles/file/gemoxupovuwufasil.pdfIn PDF document text
    • http://omg.su/upload/File/dejuzix.pdfIn PDF document text
    • http://andrelandberg.com/userfiles/file/4613689757.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/28741eff25f222fae54b27ade04edcdb/28132713899.pdfIn PDF document text
    • https://alzubidi.com/userfiles/files/75084740193.pdfIn PDF document text
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/44b331c14f9ab3244906f8d8d81bed57/2491822264.pdfIn PDF document text
    • https://cytairtool.com/test/userfiles/file/20210617_7a5d2.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/85c95f8e0ba2f22c7bdee1d436aacc57/lurakowuvalezom.pdfIn PDF document text
    • https://charteriraq.ir/basefile/charteriraqir/files/gerifotitudipivuzukek.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160774802bbd06---nakitinefezil.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/3ece353007a63232e5efa1b3bb87aa41/vapaw.pdfIn PDF document text
    • http://www.zywawiara.pl/pliki/42148648731.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e35e0499d---sutilul.pdfIn PDF document text
    • http://yuanhebiotech.com/upload/files/fadituvaxepa.pdfIn PDF document text
    • http://yaeram.com/userData/board/file/tevizurovabefetoxemozinu.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_off0000db26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB26 10700 bytes
SHA-256: c5f00a11f64d4ae7cfac345e5ce38583b02deead664fcd376d75c5f5ed6c4b63
font_01_sfnt_off0000f3da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DA 18360 bytes
SHA-256: b82bac9c294079fa1f4c0a908a7373f7167009b36fe77cbc354868a812479509
font_02_sfnt_off00012429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12429 16580 bytes
SHA-256: d07e4f3b049d202f21f513ead023b62e049f88255cea603b2e364991e7f63174
font_03_sfnt_off00013b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B3C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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