Malicious PDF — malware analysis report

Static analysis result for SHA-256 17844bd52a1783ec…

MALICIOUS

PDF

85.7 KB Created: 2021-08-18 20:20:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: ace18a13bfce678f3317dd8b19a16f70 SHA-1: 92209e08b22205777ef9378161e20d1f2eeab823 SHA-256: 17844bd52a1783ecef49c492cbb9b1c57dce19a6ef123a1c59a2a18e2dccb51b
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on compromised or disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are consistent with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://philabc.ru/uplcv?utm_term=is+disney+california+adventure+open PDF link annotation
    • https://calmoinc.com/upload/editor/file/ponewerokazisumoj.pdfIn PDF document text
    • http://anaminfo.com/attachfile/file/19976082486.pdfIn PDF document text
    • http://donationwebsites.com/clients/6/68/68901b9e08e997a22fc64c74502b39ca/File/52770520332.pdfIn PDF document text
    • http://bright-inter.com/file_media/file_image/file/7566260750.pdfIn PDF document text
    • https://malabarmail.com/ckfinder/userfiles/files/poditak.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/f8e2b412e50645f673301eae3607e252/96542512490.pdfIn PDF document text
    • http://portamarioarchitetto.eu/userfiles/files/12244235525.pdfIn PDF document text
    • http://goldcoil.com/uploadfiles/files/jopozopifuserezudeved.pdfIn PDF document text
    • https://fablab808.com/nbloom/fckuploads/file/72270937389.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f8f7581823c---pavorizagojelotowe.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16071ad2e6e14e---vuvijis.pdfIn PDF document text
    • http://al-farh-iq.com/upload/userfiles/file/67087282995.pdfIn PDF document text
    • https://simon-daulte.com/ckfinder/userfiles/files/79629578012.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b818552c43d---72905046645.pdfIn PDF document text
    • http://flygarfield.net/userfiles/file/gurusujalap.pdfIn PDF document text
    • http://altinay-law.com/images/file/26041837985.pdfIn PDF document text
    • http://haustechnik-hagenauer.at/puguwosurapakejoxusugo.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/db58882a4599a6cbf04775225db3daee/27438415025.pdfIn PDF document text
    • http://wingmanresearch.com/userfiles/files/32810682227.pdfIn PDF document text
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/47a0c62edef553364a92ff363f1778fc/watuwodepisove.pdfIn PDF document text
    • https://limsurdua.com/contents//files/tipokokanabuf.pdfIn PDF document text
    • http://dbjhockeytournament.com/clients/f/f9/f9ff496842c877cbb4522510b668f2a2/File/tunirigozafijigulilu.pdfIn PDF document text
    • http://chromowane.com/userfiles/file/31298238548.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/301e4ab8f5d72a40ad186c7cce8c0009/3983794365.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_off0000e8e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000100f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F4 18096 bytes
SHA-256: b4c7d42f8f8fe5d6fe9429b2094ddf5efa8a70f29bd3ec49e2e8ad77d1d66022
font_02_sfnt_off00012fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FA2 10844 bytes
SHA-256: 411c9b50547b5263e6c5c41788c5920cb91114ec41d3ba44b648156116ce81a0

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