Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9ecdec4ed434a6b…

MALICIOUS

PDF

121.4 KB Created: 2021-03-18 10:02:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: c916df7e2d673eee5bba35fcd24d0075 SHA-1: b3f14736ab60e354a03c2459c99a3165c2fb9c86 SHA-256: e9ecdec4ed434a6b45bb412b9b2b113bccdad30a2df718a4873983b3918b25e5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with one prominent URL pointing to 'jumiwimov.ru', suggesting a phishing or malicious redirection attempt. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of generated links, further supporting the malicious intent. ClamAV detection and ML classification confirm the malicious nature of the file, likely as a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/wix?keyword=ancient+greece+laws PDF link annotation
    • https://jadivamanug.weebly.com/uploads/1/3/4/8/134868371/1eedd3f.pdfIn PDF document text
    • https://cdn.sqhk.co/gobonuzuwif/jYGQz42/my_singing_monsters_hack_download_apk.pdfIn PDF document text
    • https://fekebejoluxoji.weebly.com/uploads/1/3/4/3/134309121/9648823.pdfIn PDF document text
    • https://banafazag.weebly.com/uploads/1/3/4/3/134325205/jutatoxosa_gobanowomozubi_rumuwe.pdfIn PDF document text
    • https://cdn.sqhk.co/xupebasolaw/XihjcCD/14546880545.pdfIn PDF document text
    • https://zurukuwimuso.weebly.com/uploads/1/3/4/3/134325804/9445110.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/jhiachh/bipuz.pdfIn PDF document text
    • https://cdn.sqhk.co/jasamomedam/jcidOhR/33364444881.pdfIn PDF document text
    • https://cdn.sqhk.co/definuseju/hakTjd8/mens_haircuts_thin_hair_medium_length.pdfIn PDF document text
    • https://xaziribubeka.weebly.com/uploads/1/3/4/3/134397614/rugefesotopakig_vijosi_kelavidev_jinegilafug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/appu_movie_audio_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/systemic_lupus_erythematosus_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/muvomodusifibibudirov.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/sikiwiwobojupe.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/satonaboratafadamubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43e8a962-72e2-4214-a104-7930d7da3d05/the_crown_season_2_cast_tony.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/nothing_holding_me_back_video.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/el_lazarillo_de_tormes_tratado_6_y_7_resumen.pdfIn PDF document text
    • https://s3.amazonaws.com/tugafebip/mapivubifede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06e46088-8bc7-489b-b0df-d58fe5c443a6/weber_grills_parts_lowes.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/84924761532.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19753 5048 bytes
SHA-256: cac2bc62ddf19c204504545a8379c327b7bfee67bd80eeb67dd014c6dcde899d
font_01_sfnt_off0001a8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A8A1 14192 bytes
SHA-256: 97ce3944d6baf1b8f384e89a9ac364ce49a27015448d3991d25ee5947d86e836

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