Malicious PDF — malware analysis report

Static analysis result for SHA-256 24124554328dcd56…

MALICIOUS

PDF

75.7 KB Created: 2021-03-04 20:15:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1cebacae0cdf44daa715e2a8afa07720 SHA-1: 1caaa533e18bbff9171b109adeeb3455e522da7e SHA-256: 24124554328dcd561bbf2c0994158435a2386b8bdc46f6c0aed4644769a2699d
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/award?keyword=how+to+unlock+panasonic+air+conditioner+remote+control In PDF document text
    • https://kelutatu.weebly.com/uploads/1/3/4/5/134521402/voviseterezuzoz.pdfIn PDF document text
    • http://taxilozevuj.iblogger.org/xebib.pdfIn PDF document text
    • https://cdn.sqhk.co/sivumazudi/gdZidcp/38293355938.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/Qhf8b26/10771060089.pdfIn PDF document text
    • https://bexudedumazises.weebly.com/uploads/1/3/1/4/131406785/6671267.pdfIn PDF document text
    • https://cdn.sqhk.co/ridijafugemi/ijje3gi/jopibupogolefoxa.pdfIn PDF document text
    • https://cdn.sqhk.co/xexerekija/jgdX43h/shape_slicer_3d.pdfIn PDF document text
    • https://lobavasato.weebly.com/uploads/1/3/1/4/131483685/04c151014.pdfIn PDF document text
    • https://cdn.sqhk.co/pevejotomoma/Mhhs7hj/download_oceanhorn_2_apk_data_full.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gozipoxux.rf.gd/carrom_pool_game_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64ee4a7b-4633-48ed-8962-c16ceabfe713/vokogulevezodiresujiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/885a6add-e739-4826-afbf-1dfdd425e5cd/does_a_beetle_have_antennae.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/724c1858-0dcc-4913-aa98-df4ca3392f68/foxafina.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/cumulative_frequency_graph.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2861cc29-32c1-4ed0-9e18-b85fd10a1aa0/worirotafegubakeb.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/domozixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52026569-2e1f-4679-8b00-66213f1b36a5/kosukori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30641c15-415a-48c7-ae0f-b80a69a3f3f6/54092457615.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_off0000eb83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB83 5336 bytes
SHA-256: 101d8a7181d41cb49b7e859676f8fa5d5668ee889bd5252ea34d87a645df6d9a
font_01_sfnt_off0000fda2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA2 10420 bytes
SHA-256: c1987c36bd891a3930993faf1bf20f39e0e5bf5919bd7a77d2f87549961ebed4