Malicious PDF — malware analysis report

Static analysis result for SHA-256 54d6aed3f7a7f7ad…

MALICIOUS

PDF

74.8 KB Created: 2021-09-21 01:11:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 4c9d1ede99654c19bc8d6aa739b77cff SHA-1: 02ad81c7732cb51c859b334267663e6b82287c61 SHA-256: 54d6aed3f7a7f7adc254afb140ef131fd7f7d3ad8cc8ea345eefdc96a994ff6f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to compromised websites and disposable hosting, indicative of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are sufficient to infer a malicious attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://drafthe.ru/uplcv?utm_term=how+to+set+up+missed+call+notification+on+android PDF link annotation
    • http://albertf.madteam.net/ckfinder/userfiles/files/15740471489.pdfIn PDF document text
    • http://healingtown.org/userData/board/file/73456630309.pdfIn PDF document text
    • http://mylodge-naoshima.com/75027130535.pdfIn PDF document text
    • http://ahzycw.com/upload_fck/file/2021-9-1/20210901183255435820.pdfIn PDF document text
    • https://equantumconsulting.com/files/files/25276753061.pdfIn PDF document text
    • http://www.rosabrockenhaus.ch/ckfinder/userfiles/files/58333604299.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/161318a3fd40ed---37149623662.pdfIn PDF document text
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16132a29990c3c---50753043439.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613745c172db3---disugiriwoko.pdfIn PDF document text
    • http://rileyillustration.com/images/agency/files/wivekajokefogojavabina.pdfIn PDF document text
    • http://guchen.ru/d/files/62102976187.pdfIn PDF document text
    • https://efficimm.fr/userfiles/files/30212165714.pdfIn PDF document text
    • https://cevhertemizlik.com/userfiles/files/91351839965.pdfIn PDF document text
    • http://angel-conference.org/upload_fck/file/2021-9-16/20210916091920173097.pdfIn PDF document text
    • http://machinegroup.ru/img/outer/files/79428050672.pdfIn PDF document text
    • http://santabruna.cl/upload/file/zitowavetikigivekusorewab.pdfIn PDF document text
    • https://www.babetravelling.com/ckfinder/userfiles2/files/78957379105.pdfIn PDF document text
    • http://songhakbbq.com/uploads/files/lamavogasal.pdfIn PDF document text
    • http://protezas.lt/i/File/10418647821.pdfIn PDF document text
    • http://yds-wcv.jp/free_images/files/vamenonepazale.pdfIn PDF document text
    • http://www.haztartasigepszakuzlet.hu/pics/file/lilexa.pdfIn PDF document text
    • http://rurisnet.org/images/file/1930124016.pdfIn PDF document text
    • http://reclameindex.nl/images/uploads/ledafusuluzurifegix.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141a6583299d---zatugugewusurobikeromol.pdfIn PDF document text
    • http://www.morrisjones.co.uk/EditorImages/file/dogetideponunetes.pdfIn PDF document text
    • 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_off0000c05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC05C 16744 bytes
SHA-256: 1129dff85ec770ca0eadefff14744402f71f313b14a69c1ad5d732b7d0bd81c2
font_01_sfnt_off0000eb71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB71 10956 bytes
SHA-256: 8481f001de88fbd6fa72e9520bf8e9a219e536971745207af1ea9017fafbab1a
font_02_sfnt_off000104da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104DA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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