Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d97baaf6222911c…

MALICIOUS

PDF

90.8 KB Created: 2021-09-01 00:57:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 9cf1fd254af8a1a84371f9f2ade18050 SHA-1: 80f46b89caf5c5851c9055f5fc91d8c867d84c89 SHA-256: 1d97baaf6222911c820871c34169e2d528e0df6b90babdfe2d155d6c6f663fd0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a link farm pointing to multiple compromised WordPress sites, likely intended to host malicious files or redirect users to phishing pages. No scripts were extracted, but the presence of numerous links to potentially compromised CMS upload directories suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cdf1950c6b3---22484453022.pdf In PDF document text
    • http://planet-for-events.de/userfiles/file/rebagoxiwe.pdfIn PDF document text
    • https://s-h.cc/uploads//files/202107301434313028.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/8cbbc0e05ad6018cde985a6d4693d354/3235993994.pdfIn PDF document text
    • https://finatwork.com/userfiles/file/6149834556.pdfIn PDF document text
    • http://unicaconsultoriarh.com/images/files/nenobevurumize.pdfIn PDF document text
    • http://jewelry-shopping-city.com/uploads/files/202108172030311393.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/tdlecqsge7oml0g6lhvnktvkh3/mubamewipurejos.pdfIn PDF document text
    • http://worldprint.su/userfiles/file/kuvagasokep.pdfIn PDF document text
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/677inkeq5dvcbjv2arr9f9pu75/toxudewivarabanolesiwes.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cadde98f375---55732018446.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/0385fe3f07fe22f483543060c3c1c4d0/tufewelesujanigamonukek.pdfIn PDF document text
    • http://www.videobezopasnost.ru/ckfinder/userfiles/files/vuluwezinopukolu.pdfIn PDF document text
    • http://xn--o39a91gvwm83kbsn.com/FileData/ckfinder/files/20210708_B33CAA2992245EF6.pdfIn PDF document text
    • https://qian-ho.com/upfiles/editor/files/3391757548.pdfIn PDF document text
    • http://alkanboya.com/files/file///21737210917.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/7cbfa39dacaeac538a6914ca381ffff1/kejox.pdfIn PDF document text
    • https://vientangluc.com/upload/files/14852010550.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f1c359e7e8---28037578595.pdfIn PDF document text
    • http://24horasnoar.com.br/ckfinder/userfiles/files/xofezuwugogimofotiwanakej.pdfIn PDF document text
    • https://saam.vn/images/content/file/85596319259.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/16081e20283486---50456103017.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=use+your+in+a+sentencePDF 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_off000100d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D4 10400 bytes
SHA-256: f9e4dc69d852e0027deb64c0d967362ad493224017ac1f5da6d7163130b34a95
font_01_sfnt_off0001188d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1188D 17464 bytes
SHA-256: cd6483e1af539f448af2872659a4b5de36aff53f0d6eb5dd4f862603c56a04f0
font_02_sfnt_off0001458b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1458B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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