Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e02e02c92a4338…

MALICIOUS

PDF

75.2 KB Created: 2021-06-28 18:42:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: a0f8f2e29d1ab3c42c4a0d4f0cba2f4a SHA-1: ea37ae703ed3286f83ee5c7f3f58e8100ad0d8ea SHA-256: 01e02e02c92a4338a92c10d04098c900bf0bc0352d0493221c1c94194590d34c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous links pointing to various domains, many of which are hosted on compromised WordPress sites or disposable hosting. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics indicate a pattern of link farming. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://chonburi33.com/userfiles/file/somam.pdf In PDF document text
    • https://gyn-koe70.de/obrazky/file/10443255987.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085b3664dbdc---wutavipozotofiresivafu.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/6bf2d20b6aa3e65b5dfca17df8380040/12324482518.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160860175d5b92---ludavimedigorupu.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/ed9929ac2c17e90310a52f59cfb840f8/29602395298.pdfIn PDF document text
    • http://ilovegabal.net/fckeditor/_upload/file/wavakezodusexe.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bfb2caa426d---jugolefex.pdfIn PDF document text
    • https://syntellect.ru/Repository/file/56966598831.pdfIn PDF document text
    • http://mobydick-band.de/fckdata/file/bepajararuwep.pdfIn PDF document text
    • https://villatoscana-pi.it/userfiles/file/debutifuwatixi.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b4c16c0fb---wajix.pdfIn PDF document text
    • http://akgikorea.com/file_upload/fck_upfile/file/wepafidagijapewobobipo.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607968037982f---43249651983.pdfIn PDF document text
    • https://burlingame.com/wysiwygfiles/file/85729176983.pdfIn PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/m12krjfa7nqjhsnbevngm82u91/risilezowumesomegorexape.pdfIn PDF document text
    • http://tsg-edinstvo.ru/userfiles/file/vidubigamajafegovuxes.pdfIn PDF document text
    • http://termocity.by/pics/files/zegogifuronojitup.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff79ee746f---12193306435.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/54559bc7836f95afb802e13b23c4e1dd/visewarigalefafuju.pdfIn PDF document text
    • http://jlm-kg.com/uploads/file/22407947062.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=default+activity+not+found+android+studio+4PDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b0c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0C2 16204 bytes
SHA-256: 2f37ea1b11ece644fef2f420fc5d5e29c860255d372ec3a711666e2589675489
font_01_sfnt_off0000c670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC670 15284 bytes
SHA-256: 62373ded48186b22e21bc64ccdd2f0ddede17f0aeea2e3ec57876521f7f37638
font_02_sfnt_off0000ec1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1C 10828 bytes
SHA-256: 8ea6ffec4f919ad19f507ff0157bea3b3df156b4d3823f19122414d5b1d201fd
font_03_sfnt_off00010552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10552 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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