Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f86eddf003277f…

MALICIOUS

PDF

71.1 KB Created: 2021-06-26 18:06:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0aeb276aa43a178b433d0032c0b8a6b9 SHA-1: 5484115944c6bdde0a61f3633dd9cc50fab02777 SHA-256: 32f86eddf003277f29d05b04a7a082e17dda88a77181c8ace4793e41336564c0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to numerous URLs hosted on compromised WordPress sites, suggesting an attempt to direct users to malicious content. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics indicate a likely phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/16095bfe7dc443---fuwipudodewewor.pdf
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/bf7294804cf2d9389ea5746a06f8026f/vokajasoper.pdf
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/933f1c6b2e8ea4fefc92f3b43328e9a7/newelavovotegelop.pdf
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1609f749ccc880---22271663485.pdf
    • https://juniorclublivorno.com/sitonews/images_upload/files/vipaxitoledusurav.pdf
    • http://mobiliteit.nu/files/wikufopixalasap.pdf
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf2d040e41a---4710499581.pdf
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cfd5edae9c---jerakiwonedokesokemix.pdf
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/v0p3lr7spci87m6lsa1ertf711/39941623578.pdf
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/r1hmbjid84qnge6vp6ardi98o3/tujabugabosezalopinumep.pdf
    • http://srsheicha.com/uploadfile/file/dumafukupuroxunaxurevig.pdf
    • http://brmhn.com/userfiles/file/20210523134917_8b7ki8.pdf
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b8fe6b1f67a---19054727269.pdf
    • https://binarbaidfabrication.com/public_html/userfiles/file/xopafokinexitigokopan.pdf
    • http://sns.hu/_user/file/14108876610.pdf
    • https://vntdc.com/upload/fck/file/99581750538.pdf
    • https://www.nexidia.it/wp-content/plugins/super-forms/uploads/php/files/b4f7c1ecd9caf03606decbafe8def1a5/jitalazajodelomusigifarin.pdf
    • https://menu2uplus.com/images/file/40083841364.pdf
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608459478629f---72385814719.pdf
    • http://sevimticaret.net/userfiles/file/rewosig.pdf
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16082245b5fb00---27815063800.pdf
    • http://stensoproject.com/userfiles/files/livesuxozufagojibilekem.pdf
    • http://akcjonariusz.com/UserFiles/file/dojiwodi.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=computer+write+off+for+business
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b999.bin
a9b5f7ea01da84c0c5ae4a04b578330775ee0185259b5c3d9a15557662e34d9f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB999 14972 bytes
font_01_sfnt_off0000deb3.bin
b37723577f3d11fefcacd6abb1bd8d0d807cf1600b82c712ffcc9fac5d22e09d
pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB3 10668 bytes
font_02_sfnt_off0000f701.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF701 16792 bytes