Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9a1fb23397dc930…

MALICIOUS

PDF

83.0 KB Created: 2021-09-06 21:05:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e48e31be90fe4692d9ed8103f4440b7f SHA-1: b65747d72440bdb7defe46418ceea8c296035c3d SHA-256: e9a1fb23397dc9303da46215249d13359b9b872094dee3684f92e25e15b8c768
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and link farm heuristics points towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://medvor.ru/uplcv?utm_term=barzanji+mawlid+book+pdf PDF link annotation
    • http://abwingsjanaf.com/uploads/files/juzuguribabubika.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/8k50t24cgjio8tmo5psp77ceu7/60836252030.pdfIn PDF document text
    • https://afmiletisim.com/resimler/files/22179490989.pdfIn PDF document text
    • http://www.syrahresources.com.au/application/third_party/ckfinder/userfiles/files/bekowaxozilenemasoronat.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/q1lcfq9a21op99m9g3k6j4fsi2/85202284819.pdfIn PDF document text
    • http://babijie.com/upload_fck/file/2021-8-25/20210825174754718763.pdfIn PDF document text
    • http://caycanhtuyhien.com/uploads/image/files/vogekib.pdfIn PDF document text
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/ea1c41fb0318d3ff6a8a0ffb5995f694/92839841587.pdfIn PDF document text
    • http://sportservistocik.cz/UserFiles/File/94642411365.pdfIn PDF document text
    • https://ckfinder.pamlskovnik.cz/ckfinder/userfiles/files/88471222653.pdfIn PDF document text
    • http://reelproductionshd.com/userfiles/file/jakomixiw.pdfIn PDF document text
    • https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/ca0b6e7d7384d3d621297eeaf44417b5/pebelotovewifuvozixokin.pdfIn PDF document text
    • http://roletyhanarol.pl/files/file/9092433355.pdfIn PDF document text
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/d755bf60c4e7279a606106f5a71a5e8d/31429185597.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160830b1e37930---duguxodifununapal.pdfIn PDF document text
    • https://legacydockandmarine.com/wp-content/plugins/super-forms/uploads/php/files/412e103c888c0dad8d6b3915b193b862/nisemirixukifozegizezuz.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/cda157e0959b574d0e764ff3dcfd2a6f/59425935500.pdfIn PDF document text
    • https://digiconelectronics.com/media/34172497459.pdfIn PDF document text
    • https://ego-sofa.tw/uploads/files/202109041117413214.pdfIn PDF document text
    • https://ptkas.com/kingkong/userfiles/files/83273277093.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/6a489015a1832aeb47b2b1fb9d129310/damepoja.pdfIn PDF document text
    • https://roweryelectra.eu/app/webroot/uploads/file/1627292657966.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_off0000d5e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E0 10824 bytes
SHA-256: 6e86b67603e5f3cea0e17eb38ff6df797cc833cf34148808755f80b3fdd5fc24
font_01_sfnt_off0000ee8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001069f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1069F 21044 bytes
SHA-256: 8ccd18c0b2e376b4e8e6e9c1389aac007f83bd54a05b899cc101948e8a0b1770

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