Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0c5c811d0c1889d…

MALICIOUS

PDF

74.0 KB Created: 2021-09-11 06:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a98c2408be519e161adbbe74a060897a SHA-1: 31d8e611d86e28dbf8103cdbd8230f4ef9b57e83 SHA-256: e0c5c811d0c1889d373b10b631f0404c88a6d2cc0bb93db7117e9fa58efb3d5b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to external domains, suggesting it functions as a lure to redirect users to potentially harmful websites. The PDF structure and the presence of external URIs are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://smidgel.ru/uplcv?utm_term=how+to+upload+video+from+android+to+computer PDF link annotation
    • http://fosterfreezesantarosa.com/uploads/files/88142898170.pdfIn PDF document text
    • http://monikaknoblochova.com/userfiles/file/nejatipebute.pdfIn PDF document text
    • http://hengfengpaper.com/filespath/files/20210903145316.pdfIn PDF document text
    • http://pereplanirovkaoblast.ru/pict/file/52326575776.pdfIn PDF document text
    • http://thementalhealthadvocates.org/files/userfiles/file/nuwatinoren.pdfIn PDF document text
    • http://rassadaspb.com/new/files/file/fisirotufodaxogemefujaw.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1612f1e1e6a64f---13494206120.pdfIn PDF document text
    • http://nationalcoopadvisors.com/userfiles/files/59369080689.pdfIn PDF document text
    • http://majortaylorride.info/images/uploaded/file/18434377971.pdfIn PDF document text
    • http://ueros.fr/admin/ckfinder/userfiles/files/xeburuzobubefawagivar.pdfIn PDF document text
    • http://faceconnects.com/ci/userfiles/files/vefokabexi.pdfIn PDF document text
    • https://posetili.ru/userfiles/file/20858933205.pdfIn PDF document text
    • http://tinhdauvietnam.vn/upload/files/42648373037.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/ea318efa3326ed7213764b3dac3bdfde/totinelafapagefebe.pdfIn PDF document text
    • http://taigesw.com/upload/files/vixivudizo.pdfIn PDF document text
    • https://98ing.com/upload/ck/files/20210910_165058.pdfIn PDF document text
    • http://execdentalclinic.com/uploads/ckfinder/userfiles/files/juromolebixavawikivekuger.pdfIn PDF document text
    • http://fra2ange.it/userfiles/files/62463942207.pdfIn PDF document text
    • http://hyeminshop.com/DATA/files/86465382326.pdfIn PDF document text
    • https://palet-school.com/files/files/52761400406.pdfIn PDF document text
    • http://monikaknoblochova.com/userfiles/file/42823315540.pdfIn PDF document text
    • http://hightopeducation.com/cms_uploaded/file/lazivada.pdfIn PDF document text
    • http://harlit.com/ckfinder/userfiles/files/20210904_150120.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_off0000be2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE2A 10856 bytes
SHA-256: 6138a0b943db384a1ecc662370ec05aa7348e54f17c0c3ba3dd1e155cf6ccc4e
font_01_sfnt_off0000d734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD734 16768 bytes
SHA-256: ad633f93d45998d5b40ca2f75c6bf9ba4de6a3b4e7fc7dc88235c57c50f47100
font_02_sfnt_off0001027d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1027D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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