Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07cc16d32c47bad…

MALICIOUS

PDF

85.0 KB Created: 2021-08-24 06:06:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: c2f947c88c286c44fc541b7058c53af2 SHA-1: 7565b59f85157f689f31e52d27c97fa9a80ec0d1 SHA-256: d07cc16d32c47bad42ef9eba8fd5e91f0f88a9617a8160945fcdca4b5e2756c8
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised CMS upload directories, indicating it functions as a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the structure and URL patterns are consistent with malicious PDFs designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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 http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/c1gfkvpmpeobauskebsatl41a7/jerotirijuziwid.pdf In PDF document text
    • http://jnnycc.org/userfiles/file/lolagenuzekadakojerogadun.pdfIn PDF document text
    • http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/16085fb621ecac---52883943910.pdfIn PDF document text
    • https://ilcaminodaugo.it/file/norutumefimisarofodazujam.pdfIn PDF document text
    • https://cemb.ca/upload/editor/file/jupinesadurabomala.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609938eb6a214---komexesexarosoga.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/f96827e299056e40b19c319cbb163443/22424878694.pdfIn PDF document text
    • https://cleaner.pl/userfiles/file/28750172781.pdfIn PDF document text
    • http://belst.by/upload/file/6052123811.pdfIn PDF document text
    • http://studiotecnicobonoli.com/userfiles/files/nokozaz.pdfIn PDF document text
    • http://neurooperations.com/ckfinder/userfiles/files/redomuxuvet.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee2217e479d---gozokiger.pdfIn PDF document text
    • https://actorconseil.com/files/file/80709627089.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ce421eed9b---noxifubigowamubofekaz.pdfIn PDF document text
    • http://www.pattyn360.com/upload/forum/files/xidokufivedigufawa.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/982d3bac1a290481d0ac4ed877cf6d28/bitagakerorogone.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16085db60f0bad---78405474071.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/41801167848.pdfIn PDF document text
    • https://equantumconsulting.com/files/files/kegoxowakakutika.pdfIn PDF document text
    • http://cuuhoatudong.com/upload/files/21104940009.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/v0d9598vfkk2b0g47qdk9psnbj/95757881758.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e1e2e1a7218---dixodezobetu.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/mq644k6dadul2q18nrga11mn83/sopuvewurebex.pdfIn PDF document text
    • http://kythuatviet.vn/uploads/userfiles/file/7469705285.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=why+air+is+mixture+not+a+compoundPDF 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_off0000e646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE646 17192 bytes
SHA-256: f4b6bcebaddf9672e2b861e47a7dcf7a49956bcb898364f18bf902cc5a9b3bfa
font_01_sfnt_off0001135a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1135A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012b71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B71 11040 bytes
SHA-256: c9a5c9cf1de27041c58d19237bbc5f395c92801576ff812be6d7cdf4fa8320e6

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