Malicious PDF — malware analysis report

Static analysis result for SHA-256 077b83a51b0cc456…

MALICIOUS

PDF

72.9 KB Created: 2021-03-02 18:15:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4909122d542c2051f3f7890f87dde29c SHA-1: c2db1b43960806a86b3d35d30c6bdb6df6839a3a SHA-256: 077b83a51b0cc4564c4126c85e05829b7a3ee55b7eb29054f0639dc4bc46b972
126 Risk Score

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 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://vilenefex.ru/award?keyword=hitron+cgnm-2250+router+login PDF link annotation
    • https://sujefamop.weebly.com/uploads/1/3/4/7/134762109/sivomemo.pdfIn PDF document text
    • https://cdn.sqhk.co/tatogevi/eajefHd/sazorogovigevuzarisiduf.pdfIn PDF document text
    • http://chtotakoeverti.biz/645896575509z5g3.pdfIn PDF document text
    • https://nurivotewifigex.weebly.com/uploads/1/3/1/1/131163684/436dd83593468d1.pdfIn PDF document text
    • http://xejopegig.mypressonline.com/hp_pavilion_27_qd_driver.pdfIn PDF document text
    • http://stikc.xyz/71052567387cr6of.pdfIn PDF document text
    • https://cdn.sqhk.co/xupodafib/chbfiaV/save_me_from_the_dog_house_reviews.pdfIn PDF document text
    • http://choosenews.space/tezakumopidebejutullnyc.pdfIn PDF document text
    • https://cdn.sqhk.co/jebavimot/jhagcQM/chinese_drama_2020_historical.pdfIn PDF document text
    • http://tryraisins.pro/degrees_of_comparison_worksheet_grade_3nrz0i.pdfIn PDF document text
    • http://parrrtner.xyz/aradhike_song_violin_ringtoneldrt9.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/wujixus/guide_taille_maillot_de_bain_arena.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/53150426394.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_off0000e17e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17E 5120 bytes
SHA-256: 484b77e9dee3611a633527637f21fd15347cd313e939303df210c333e3a80b06
font_01_sfnt_off0000f2e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E6 10364 bytes
SHA-256: 1e22cad5c1b19e4268e1566988b311f071c66726ffa62b02374cb77fcaff34d6