Malicious PDF — malware analysis report

Static analysis result for SHA-256 699b75f95b08dc57…

MALICIOUS

PDF

83.3 KB Created: 2021-07-16 19:56:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: bebb16ec6f5b0111dcfd0294dfa2b357 SHA-1: 76845c90a79e37e05c0b89734fca66ddf35a7198 SHA-256: 699b75f95b08dc57fdad400ebe39daf31abb6393cb54792681c732f153ae083c
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm with numerous URLs, many hosted on compromised or disposable domains, suggesting an attempt to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and the nature of the URLs indicate a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://xoblates.com/clients/e/e0/e08cfb93fb97b00c28394d0532709dc9/File/27823004640.pdf In PDF document text
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/55d88a5a994442b377663e9d03d524cb/litovaposodevuwa.pdfIn PDF document text
    • https://agermag.ro/mm/file/41600730947.pdfIn PDF document text
    • http://fkhd.cz/data/img/13866283910.pdfIn PDF document text
    • http://karlsbach.de/userfiles/files/81026255102.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/49967090360dec63a3838b.pdfIn PDF document text
    • http://saltokisport.com/uploads/files/41790668962.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/7d0060d51056e2aa1ff3c25e5a8d5d83/dogoviwufira.pdfIn PDF document text
    • http://esipro.fr/userfiles/file/26326875839.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160976b2dadf21---lakejol.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/0a522674fd8f6cda29b771fac0803fcf/gufekivimofuvefanugo.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c7049256e5b1a5c402096721aa2cc9d6/jefugamujema.pdfIn PDF document text
    • http://firegallery.ru/img/upload/tadunuwasutumabaxub.pdfIn PDF document text
    • http://alnadaoil.com/userfiles/file/52621656350.pdfIn PDF document text
    • http://acpiindia.com/userfiles/file/watidozokosokikizaloxebab.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4517632b2---moviwumigeju.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d36792860---19981335320.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1606c97dcb9b3e---tamejerag.pdfIn PDF document text
    • https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/13a93e320fcf21479dead371a351fa24/sajuwodurane.pdfIn PDF document text
    • http://przychodnia-felinskiego.pl/uploads/editor/file/pawejudosopafaponubajilu.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/398c12bd751a96fe625ea431d702e1fc/76217627101.pdfIn PDF document text
    • https://goldenapp.net/file/xadubojetozewomufawima.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=html+ordered+list+attributesPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e13f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13F 10536 bytes
SHA-256: 4bdf2b10bc753a03940deb19e138aa905ba172ef309083e716dd7550f7ffc4d1
font_01_sfnt_off0000f935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF935 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11147 17188 bytes
SHA-256: b6072edb1c8bac08c6f1f3bd25e7b6e9970778cd022926f3a7d40798235ec84e

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