Malicious PDF — malware analysis report

Static analysis result for SHA-256 c46f1ff82fa95e6d…

MALICIOUS

PDF

79.2 KB Created: 2021-04-02 13:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 62ea1fd34dee918ccf905378cc9815f0 SHA-1: fc4c1a2989191b9673ae4c741e22ee33b71a68da SHA-256: c46f1ff82fa95e6d30d43f52190e2cacce74bc3073f587dee106d994a1d5b051
156 Risk Score

Malware Insights

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

The file is a PDF that contains numerous embedded links to external PDF files, a common tactic for phishing or distributing further malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to 'Tv guide winchester ky'. The presence of external links suggests an attempt to redirect users to malicious sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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=tv+guide+winchester+ky PDF link annotation
    • http://ketadiets.site/miller_and_levine_biology_online_textbookek5ix.pdfIn PDF document text
    • http://1ux.site/87805354906fa6us.pdfIn PDF document text
    • http://fherixq.com/relizorunanudau02mg.pdfIn PDF document text
    • http://telemprom.xyz/124250372288fw70.pdfIn PDF document text
    • http://lovelyhouse.online/77010435548v24lj.pdfIn PDF document text
    • http://nyvelsets.online/tiny_epic_zombies_review_dice_towerwgbgv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://57eba762-b826-4879-8d7a-7f480aba2934.filesusr.com/ugd/e89c2b_e328423825664a34b07d7e2ad717a9ae.pdf?index=trueIn PDF document text
    • https://0ffdd24b-620b-4f4d-94ef-a39da1ca20bd.filesusr.com/ugd/853ce2_4a00b584d0e54bb9acc565c75539ab5d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/rifogip.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/what_is_the_difference_between_the_ec9s_and_lc9s.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/nuxometefovikesosexu.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/wordpress_hosting_ve_web_hosting_fark.pdfIn PDF document text
    • https://b5b764bc-4fc6-48d7-9a4b-423a4d05f225.filesusr.com/ugd/3f2390_6342051f395e442a9e41bfd34fdf3173.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/bupan.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/pet_sematary_book_sparknotes.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/83281750013.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/53544637342.pdfIn PDF document text
    • https://068ba8bc-08b0-4b68-8151-f3c59c7a5775.filesusr.com/ugd/5a4aad_d36a01b474bf4d9ab17f7240842e3698.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jozaponi/report_viewer_2017_dll.pdfIn PDF document text
    • https://8ea4a4fb-2859-49e6-8c89-66ed49166bb4.filesusr.com/ugd/0088c1_89ff87c5e922406c9483d2455e11e619.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bagokiko/dreamweaver_free_for_windows.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_off0000f6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B6 5228 bytes
SHA-256: 3f279e9a9eaa34530f53391263eede1803100731554f81b38bcf29f388723a80
font_01_sfnt_off00010899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10899 11504 bytes
SHA-256: 5208479460c9b94bdeb7f89da0e312a8a74218521c6001ad890157b68f56cd52

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