Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d7342ab1453a1e4…

MALICIOUS

PDF

74.4 KB Created: 2021-01-17 13:07:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: f8c16f050a4a21bf17810cdaaadcdf55 SHA-1: 7285257bd2b9897c0b95f083659775ef511547e4 SHA-256: 3d7342ab1453a1e47981761a6a246a30940c1853153273c06501af7f3b84435e
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://gettraff.ru/shook?utm_term=space+agency+name+generator In PDF document text
    • https://static.s123-cdn-static.com/uploads/4473388/normal_5fc4b4368690d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485704/normal_5fbc9e63dc673.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486193/normal_5fc04f13678de.pdfIn PDF document text
    • https://rifuxegu.weebly.com/uploads/1/3/4/5/134525143/e665125314529f3.pdfIn PDF document text
    • http://wopebexe.66ghz.com/92725664584.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374368/normal_5f9c19831bfb2.pdfIn PDF document text
    • https://dupudebokuvufex.weebly.com/uploads/1/3/2/3/132303235/cec303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481699/normal_5fc20dcf8ca3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372673/normal_5fd3c2a104bb5.pdfIn PDF document text
    • https://refapezi.weebly.com/uploads/1/3/4/9/134904673/zobefaxagiwuwavow.pdfIn PDF document text
    • http://wozutujetotox.iblogger.org/fupilosonemamutolaxejeti.pdfIn PDF document text
    • http://jipuvojenibomig.22web.org/digital_electronics_logic_gates.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/wibedubosateg/fasogumu.pdfIn PDF document text
    • http://pizibajavodup.epizy.com/circular_saw_rip_guide_ryobi.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/demaw.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/sample_balance_sheet_of_sole_proprietorship_philippines.pdfIn PDF document text
    • http://nuvebuxuloruvux.epizy.com/abrahaminte_santhathikal_malayalam_movie_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/everquest_power_leveling_guide_2017.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_off0000e6f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F4 5248 bytes
SHA-256: 652b65b7f3779c0bee24a88fec0e024bb7ff7971073610f92775e38ceb6e38b3
font_01_sfnt_off0000f8c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C3 10468 bytes
SHA-256: 64c82d2d50d6883b0566d54bbaf2531f868f3c60f3349b97295aec3c2e7c3f9a

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