Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bd729da3dfb5504…

MALICIOUS

PDF

171.1 KB Created: 2021-05-07 04:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 09cab4b6f1ac080b0c736102e4310f85 SHA-1: 25d30c253e5314aedf20c66250d0f880e047543a SHA-256: 3bd729da3dfb5504bcfd80c32dbb5c3199721713cfa6cd2df501ddca47e14942
156 Risk Score

Malware Insights

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

The PDF file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It employs a link farm strategy, hosting malicious files on compromised WordPress sites, to deceive users into downloading further payloads under the guise of a company profile template. The embedded URLs and the use of compromised CMS uploads indicate a clear intent to distribute malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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 https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/650ac830a21da850bb2f8628206ce4c3/jifapibikotibapowut.pdf In PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070a4010aaf5---25773552360.pdfIn PDF document text
    • http://poltinik.ru/userfiles/file/61692058366.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607d8616a6c1c---23734913421.pdfIn PDF document text
    • https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160830f5ae390b---10325196576.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc802d0ee4---55547962099.pdfIn PDF document text
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/4bf67cde809d0f9cc43b4d502d7d2277/86178672854.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/16072251c02b96---17452450506.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16076d0227971a---katiximovutu.pdfIn PDF document text
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/f02deb2cfad6e15c11348bdf9e5c9a0e/34551183726.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160774f5653ac8---26477170417.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160748b5c5f44c---78742180350.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/sau1lra66ue7h3jj38mamhpk49/69339383790.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16090adaad4777---nururizelofomu.pdfIn PDF document text
    • https://felix-schulze.biz/wp-content/plugins/super-forms/uploads/php/files/g9kjv4e467ue306gmhg6qga9jp/91478488012.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16089a64cea5df---kadinelijeguso.pdfIn PDF document text
    • http://alexanderjamesbackcatalogue.com/userfiles/file/kitajibidakufinevixepoti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=company+profile+template+ppt+freePDF 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://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16EE6 66412 bytes
SHA-256: 707e051936cd1e1e1114c8b2ea835f3e4e84d7be3c6061ee30b5c5ecb0c23a06
font_01_sfnt_off0002370c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2370C 4876 bytes
SHA-256: f41404c08bae110902876c706566409145c0bdd4542c8c1db13a4cc13ea194be
font_02_sfnt_off0002478f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2478F 2096 bytes
SHA-256: 68df5f0f439cd2da8ea5dc6dc09fbc9289df36c20cbf133e2827af035d279f62
font_03_sfnt_off0002509d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2509D 6652 bytes
SHA-256: a2adf2fc7cf13f87a7ebf4b5234696f113aa389d64c9f3ad23699656ad93fc0b
font_04_sfnt_off000260cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x260CB 11076 bytes
SHA-256: 363216bc5aa7dce11ccf5daa128838dd809ddf0a6d25a07348e1d875c39212ac
font_05_sfnt_off000286cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x286CD 16512 bytes
SHA-256: 929fecd780431443c1581cc9643956cb448d8d6a42735ab2a7e091e6d7a8d9e3

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