Malicious PDF — malware analysis report

Static analysis result for SHA-256 030ec69a6f47d65f…

MALICIOUS

PDF

96.4 KB Created: 2021-07-23 02:13:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: f76214fad331325b6e8da5c9fe1449ab SHA-1: fde21a9b9f54fa1ecf2fd2230251aa9b5bdd44ad SHA-256: 030ec69a6f47d65f92cbbcc6b69fff9eb4e902535585a1ab791e430d5434ef0a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to compromised WordPress upload storage or disposable hosting, indicating a link farm designed for malicious redirection. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://ctsgroups.asia/images/file/57902853635.pdf In PDF document text
    • https://mmoxx.mn/userfiles/files/95068282148.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606d11e450671---29416758578.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607db5af8bd3e---durovitemesu.pdfIn PDF document text
    • https://capecoralliving.com/media/file/sagakus.pdfIn PDF document text
    • https://wipaphun.com/UserFiles/File/najasuvojabejatel.pdfIn PDF document text
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/d9ab76147505d4e98c9e09a2cc1834c8/nixepamusil.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/r7agpn8uut2eodgc7q1mp8fcbh/59164135484.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/2a6b1b7e302b5f7838af64e71d0e41f0/84098129464.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607358df738bb---290054827.pdfIn PDF document text
    • http://lnianemarzenie.pl/userfiles/file/gagolafopilejusofijikuz.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/en5786rbc3j4i2aavhnbnsb1b9/lexurag.pdfIn PDF document text
    • https://raljob.com/userfiles/file/nesisatewagi.pdfIn PDF document text
    • http://bigpictureresources.com/userfilesbigpicture/file/51580215340.pdfIn PDF document text
    • https://muguet.fr/sites/default/files/file/nuravuvebiw.pdfIn PDF document text
    • https://pinpointfeedtech.com/ckfinder/userfiles/files/25202932645.pdfIn PDF document text
    • https://verandapattaya.com/userfiles/files/42678007494.pdfIn PDF document text
    • http://yilip.net/userData/board/file/68733458059.pdfIn PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/ur8gg684hfd45nu6tv74t0pve2/97756559668.pdfIn PDF document text
    • http://fredericjean.net/oplusco/file/3632019788.pdfIn PDF document text
    • https://bohemiamaestro.com/webpagebuilder/ckfinder/userfiles/files/95175215405.pdfIn PDF document text
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/a507079ef8bbb1bb5951bfb578f7738b/selamorawenaxazuneluzaz.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/8635ea7541fd995e94a26493fee3e4b2/53464817345.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/2fjmq1jgtkophct517r7l6qdda/9381655533.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1609627fe54fc5---sejonivuji.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=roland+cube+100+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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000114d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114D0 18208 bytes
SHA-256: 23da1b67b2e5b9194514040f6b35ec82f05eeabfb8bb879e86168a0be9bbfd05
font_01_sfnt_off0001440f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1440F 10532 bytes
SHA-256: a5bef0856a5279ad10c9ef0adaf4e0d68f79de489dea847466f7e1a6b3f3855f
font_02_sfnt_off00015c04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C04 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1