Malicious PDF — malware analysis report

Static analysis result for SHA-256 14f8ae12a9be30ca…

MALICIOUS

PDF

81.3 KB Created: 2021-09-02 14:54:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 18bf31be9437a84c04cf1ec25988f008 SHA-1: f825049134e5fc4f32edda1d477544db2968f621 SHA-256: 14f8ae12a9be30cacd6fe9bce860badde0c7f3d7b9b3eb49721036bfac44b59b
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to numerous compromised CMS upload locations, suggesting a phishing or malware distribution scheme. The embedded URLs are likely used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/951bd24c51ae9254770091473bd0df32/79978387224.pdf In PDF document text
    • https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/7c3b98430761de50164d8992721d627b/wewesimaxedekewunonowubo.pdfIn PDF document text
    • http://28777886.com/Lpf/UPFILE/userfiles/files/57873943733.pdfIn PDF document text
    • https://syntellect.ru/Repository/file/fivoripijetudo.pdfIn PDF document text
    • http://costruzionibulagna.it/userfiles/files/57230156439.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c29832dffed---41690933987.pdfIn PDF document text
    • https://playindiano1.in/ckfinder/userfiles/files/9853735246.pdfIn PDF document text
    • http://studiofantino.it/userfiles/files/78221212214.pdfIn PDF document text
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/7a82de6b87b99435594e75032e8b327b/20484612123.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/jss3b6a19puhglan3dda3ivs06/77800112046.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160894eeff2d0f---60762239339.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16093d54991b4c---79770141927.pdfIn PDF document text
    • http://oreade-breche.fr/userfiles/file/20345901811.pdfIn PDF document text
    • http://dtmaso.com/public_html/Imagens/file/kugigatebuxixixiwatiz.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7594776f0---vubedipobejabiga.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/10549419534.pdfIn PDF document text
    • https://alarouba.com/ckfinder/userfiles/files/jakozu.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607f81b5b1361---7248755077.pdfIn PDF document text
    • http://amon-syotengai.com/userfiles/file/41163239724.pdfIn PDF document text
    • https://thuaphatlaihoanghuy.com/uploads/files/powoxekoziwogeresokewes.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/58eea8ab1eadc1d19827b19b174799f2/27042118104.pdfIn PDF document text
    • http://omonetach.pl/foto/ilustracje/file/55994366582.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=ungrouped+data+example+problems+pdfPDF 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_off0000d36d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36D 19408 bytes
SHA-256: 13dd67408f6b3c7697df18a9cc9d127a469f11fb64b002b529abc666507009a5
font_01_sfnt_off0001059c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1059C 11096 bytes
SHA-256: b9b8c54305f741e5726378cb077cfaea2d8727c9dc1d7eca637fb6e635392a39
font_02_sfnt_off00011f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F1B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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