Malicious PDF — malware analysis report

Static analysis result for SHA-256 e03d574d95cf20c0…

MALICIOUS

PDF

72.3 KB Created: 2021-02-15 08:41:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8b534b1eca91492594542d394f24ae99 SHA-1: 4b8ddf1890960052b933654a759fa6f50ce0d3ff SHA-256: e03d574d95cf20c018886698ab1795d6b4afa10f032063dec0217ae3bd29ac3e
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=www.science-teachers.com+the+rock+cycle+answers+word+search In PDF document text
    • https://cdn.sqhk.co/numorolele/4HjghaY/jigarufobenikino.pdfIn PDF document text
    • https://fozaxuvuten.weebly.com/uploads/1/3/3/9/133986835/8b811ea447a4f33.pdfIn PDF document text
    • https://wasaxedunup.weebly.com/uploads/1/3/1/4/131453111/labapijolejeles_xazabe.pdfIn PDF document text
    • https://cdn.sqhk.co/dofulokune/gfjivja/97808073035.pdfIn PDF document text
    • http://wititabeg.22web.org/47602828221.pdfIn PDF document text
    • https://cdn.sqhk.co/selijisede/cjb8jiy/run_3_unblocked_77_games.pdfIn PDF document text
    • http://xexaviwofisabeg.iblogger.org/lojakinololakefadajinikum.pdfIn PDF document text
    • https://feminudusur.weebly.com/uploads/1/3/1/4/131407357/7429e974e4.pdfIn PDF document text
    • https://cdn.sqhk.co/gotoruzud/hihmdhd/sejoparekawuguma.pdfIn PDF document text
    • https://cdn.sqhk.co/venitalobeni/ijkhhjj/75048870641.pdfIn PDF document text
    • http://dedokomaweza.22web.org/zozasazefirizag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zowomazo.epizy.com/37154570367.pdfIn PDF document text
    • http://baguzakanaso.epizy.com/empa_nna_amapiano_fakaza.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/kundli_software_for_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/joditakobaviruxigi.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/cnn_online_feedback_form.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD064 5300 bytes
SHA-256: 7b5b560838df3128b79fe0e1915065af83305e82fb453db19250be59df4483f6
font_01_sfnt_off0000e256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE256 10316 bytes
SHA-256: 6f04e0d2b8cc3031eefb3abc3a7642d2c62caa32c68498397fc1a7a0afd8e58a
font_02_sfnt_off00010597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10597 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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