Malicious PDF — malware analysis report

Static analysis result for SHA-256 9264e6e2ff0289be…

MALICIOUS

PDF

101.3 KB Created: 2021-03-29 05:53:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ae79af1ffefb23bb0733b1ac676dbcf5 SHA-1: e001c942e275acf4742ce085955874363ce8076b SHA-256: 9264e6e2ff0289be5e3b31baac7e1f30b1c875b78934aa4f478f4a1dad21fc86
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a domain associated with phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://soxebez.ru/award?keyword=allemand+facile+vocabulaire+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5fd64b0da1ed2.pdfIn PDF document text
    • http://justiciaforjustice.com/29014260640nnl18.pdfIn PDF document text
    • https://cdn.sqhk.co/zakoduba/digJejd/chile_league_form_table.pdfIn PDF document text
    • http://oneplusonemain.xyz/what_is_the_meaning_of_the_tree_of_life_necklacejd9xr.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/chbjjhi/free_shift_roster_app.pdfIn PDF document text
    • https://cdn.sqhk.co/mudonisogub/RhjeibT/download_game_knife_hit_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/zetewexuve/chadMjj/4027374441.pdfIn PDF document text
    • http://kneeksi.ru/81780792028pwo8c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498345/normal_5feafcd282b20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481271/normal_602ef4b00f9e3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7fca5364-97a1-4441-b76e-d2c429a59218.filesusr.com/ugd/735424_7cb99314d4c348679467a6b5cf7036ca.pdf?index=trueIn PDF document text
    • https://0fc0baf9-b884-4fcd-968e-f93c0f938930.filesusr.com/ugd/68ec51_ae3717a82c7042b3aeac09c8aca59fef.pdf?index=trueIn PDF document text
    • https://fecd0c08-032d-4b8b-b26c-6108aca7a00f.filesusr.com/ugd/a87c8b_5bd3ad8185cc42eeb765ff5753ec6796.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/54838542125.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/world_of_warcraft_auction_house_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/lowebemuwojiso/how_to_setup_a_home_sound_system.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/autocad_autolisp_programs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/android_floating_action_button_image_size.pdfIn PDF document text
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_bc805c0af31340e4b4bd798c2cebe79f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/likerajatob/was_the_10_plan_successful.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/bofuxuposazi.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
    • 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_off00013316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13316 5312 bytes
SHA-256: 4efc4b52fbad163ef3e0d357b6731f4f442f7b954cca417c5fb28e33fc939729
font_01_sfnt_off00014516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14516 14088 bytes
SHA-256: 51c2a8dd83432f9065f187812dc50aa4b118d29a272344c368f73eaba8b2df96
font_02_sfnt_off00017099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17099 16276 bytes
SHA-256: 426ff61d2e5ae8d7a519fd8c40cf281cabc375fa9ef3860f5f9d48c3ce64180d

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