Malicious PDF — malware analysis report

Static analysis result for SHA-256 303c4c935425fc1b…

MALICIOUS

PDF

74.3 KB Created: 2021-02-28 18:17:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b24033d8fc4796ab4b20c16c39c5f217 SHA-1: 2d2aa4e63d65a428f8300ed3b4b09122d7055974 SHA-256: 303c4c935425fc1ba17c230fc7846d06e2399c998cc20d5eb9160ad66e604596
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://seumenha.ru/award?keyword=how+do+i+unlock+my+kenmore+elite+washer PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375531/normal_6011278f3657d.pdfIn PDF document text
    • https://cdn.sqhk.co/jomonufo/ckKdYEV/dog_run_pet_running_endless._com.pdfIn PDF document text
    • https://munuteme.weebly.com/uploads/1/3/4/8/134862418/solumaloxoxo_kawofa.pdfIn PDF document text
    • http://mowilobo.22web.org/how_to_draw_a_turkey_hand_video.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480187/normal_602b11f3e6e9e.pdfIn PDF document text
    • https://cdn.sqhk.co/zafowavo/dhgB0kv/31960085211.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496605/normal_6029c307b0c1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420245/normal_60312695c1092.pdfIn PDF document text
    • https://guravigipide.weebly.com/uploads/1/3/2/8/132815190/gebubilagujodaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xumizaxojumiko.epizy.com/asidosis_metabolik_pada_gagal_ginjal.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/51064261255.pdfIn PDF document text
    • http://zapidijerazavot.epizy.com/calligraphy_brush_pen_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/chemical_reactions_worksheet_grade_7.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/chinnamalai_pera_sonna_song.pdfIn PDF document text
    • http://sarozaxag.epizy.com/lesiwizokidemokas.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_off0000e37d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE37D 5396 bytes
SHA-256: 8ab3e4ebc15662613511d568e48e59bb3ffaa2dc36a79425a5f9d254950952a5
font_01_sfnt_off0000f5bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BC 11292 bytes
SHA-256: b1893a8b627f1b57e60af5cfee80f70436ccec8eb5132ffe186ffc7dee583cc7