Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc0bf9ea83c6fe04…

MALICIOUS

PDF

136.7 KB Created: 2021-09-05 10:36:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 0207de4d9addd6d25c0e5f67c2cf596d SHA-1: 5f1b682bfe9b41ef8be8e5dace00303e2f93e1a5 SHA-256: bc0bf9ea83c6fe044634c7e874cf09cf4e7c16f7e27c4be2ba90f928b4225d1b
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. The document contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The embedded URLs and the overall structure point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://inwebjor.ru/uplcv?utm_term=fumigation+procedure+in+hospital+pdf PDF link annotation
    • http://rahwayhigh.com/clients/42761/File/dirigitomizujela.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9dae0ce72e---kidivajewisomujudi.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/278beb4bccecff1cc60980d58efa6ce9/kokoxetivesobow.pdfIn PDF document text
    • http://gioiacompany.net/images/upload/file/zaxotopagemiji.pdfIn PDF document text
    • http://fijiembajak.com/uploads/ck_uploads/files/xulegakarijekuvadex.pdfIn PDF document text
    • https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/e4a5b44754a9ae2641423614f9b5b91f/xewuluso.pdfIn PDF document text
    • https://tourgardan.com/basefile/tourgardancom/files/16900552324.pdfIn PDF document text
    • http://amsaneeraus.fi/userfiles/files/buvudedomejefexede.pdfIn PDF document text
    • https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/5a7aa625dfb966c71528c404083178e4/ludowevijowaradute.pdfIn PDF document text
    • https://bd-sokolovska.eu/userfiles/file/54506053436.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/1609c8b6f17eb3---426173476.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/gtu2hr17r3bdlkmacm9g1gfqfi/liwun.pdfIn PDF document text
    • https://samngaimarble.com/html_upload/file/widutunururifebarojanugo.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1612cd346da675---54339821048.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/usr15b4e2ja55k1otpkfejm4e4/28656617287.pdfIn PDF document text
    • http://ilyxrace.com/userfiles/files/puvodufamatebexawakobivig.pdfIn PDF document text
    • http://pphjako.pl/userfiles/file/nepopiwesigakibupalivodir.pdfIn PDF document text
    • https://granitabrasive.com/editor_up/1271179649.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160919f4d17bc2---jomaduwokowu.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-7-18/20210718220324291319.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb320209a0e---56315182896.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/ba0c9cb74f43a70d21608ce08aadf305/23194299912.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001af91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AF91 11144 bytes
SHA-256: a9481ac44f6ac4a37c40b575be5a7f636772f61430412d622d5a66dc57692149
font_01_sfnt_off0001c924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C924 19768 bytes
SHA-256: 6fc82fd90223d18cd7b619b6dac32016635334fba6285b2a42008933c70ddd05
font_02_sfnt_off0001fca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FCA5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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