Malicious PDF — malware analysis report

Static analysis result for SHA-256 69382cd126036fea…

MALICIOUS

PDF

85.8 KB Created: 2021-09-18 20:07:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: ac55f1ee62f8c0e04e4ec16c50a6872e SHA-1: 3aa2094e6b43d84c1fc509f9cd90465b61f79f54 SHA-256: 69382cd126036fea8d086b8be7b479de4a061a33da2b5f47e46d8c197477aacc
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded links pointing to various domains, suggesting a phishing or malware distribution campaign. The presence of an embedded JavaScript stream further supports malicious intent, likely to facilitate redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://laborke.ru/uplcv?utm_term=game+futsal+android+offline PDF link annotation
    • http://giprozdraw.ru/ckfinder/userfiles/files/nometurenif.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140cfe75861a---xusunuluvedobamedejod.pdfIn PDF document text
    • https://burstallconrad.com/editor_files/file/25815934850.pdfIn PDF document text
    • https://khabul.mn/mmpa/userfiles/files/7020735467.pdfIn PDF document text
    • https://institut-arabe.org/ckfinder/userfiles/files/dodokewopipemobijoledidu.pdfIn PDF document text
    • http://antropolog.ru/userfiles/file/13237496515.pdfIn PDF document text
    • https://trainova.com/userfiles/file/kekimeped.pdfIn PDF document text
    • http://studioambienteterritorio.it/userfiles/files/najumedi.pdfIn PDF document text
    • https://avflash.nl/upload/files/gobonidedovukusoso.pdfIn PDF document text
    • http://jedzenie365.pl/ckfinder/userfiles/files/11937399247.pdfIn PDF document text
    • http://tcgardening.com/userfiles/file/2021091107501773499.pdfIn PDF document text
    • http://upoart.com/ckfinder/userfiles/files/2004240912.pdfIn PDF document text
    • http://maraulsan.com/ckfinder/userfiles/files/xotaradirijadosuv.pdfIn PDF document text
    • http://verkaufs-akademie.com/userfiles/file/pedunusotez.pdfIn PDF document text
    • http://architettoseneca.com/userfiles/files/bemozasujupudosivuxufani.pdfIn PDF document text
    • http://all-vehicle.net/js/upload/files/retiwub.pdfIn PDF document text
    • http://anthonyvienna.com/sites/default/files/file/87792604474.pdfIn PDF document text
    • http://baoveantam.org/upload/files/xuwakesolezebefod.pdfIn PDF document text
    • http://cerescommoditiesltd.com/Images_upload/files/21665078520.pdfIn PDF document text
    • https://tepihtrava.rs/files/2533759232.pdfIn PDF document text
    • http://tjsyjdq.com/v15/Upload/file/2021952329584160.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613bc7e31e4e3---97433477726.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_off0000ed56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED56 16836 bytes
SHA-256: 9dfeda1e15a912cfb6eb2acf7b079035a751f6fe21847c0e482b6595d682fe0e
font_01_sfnt_off000118df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118DF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000130f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130F6 10656 bytes
SHA-256: 1158fdc3c18ff8a056a8ca92ba16871d718bc97e3cc754d6e3611c37f2d26983

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