Malicious PDF — malware analysis report

Static analysis result for SHA-256 a29443c950481eef…

MALICIOUS

PDF

73.0 KB Created: 2021-01-18 03:46:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3150a714c54b9c8c76fe55b050fb20c9 SHA-1: 1bce3aad512102086a58f942ea205d287b9d77e0 SHA-256: a29443c950481eef48fc6583d4ad93a92350aaa1a9457dc68a0c0b065d21039a
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffset.ru/wb?keyword=heart%20of%20the%20fox%20romance%20you%20choose%20mod PDF link annotation
    • https://cdn.sqhk.co/durotula/pyjfCLj/wovixudupavesijowax.pdfIn PDF document text
    • https://site-1175392.mozfiles.com/files/1175392/sonic_adventure_dx.pdfIn PDF document text
    • https://site-1176333.mozfiles.com/files/1176333/asphalt_6_mac_free.pdfIn PDF document text
    • https://sexedevojaboto.weebly.com/uploads/1/3/2/6/132695366/1913122.pdfIn PDF document text
    • https://moxatabik.weebly.com/uploads/1/3/4/8/134885740/ritimora_pituwexadalaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5faa35d192630.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/qhaPmoF/59270511458.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377116/normal_5fad89fd44fa8.pdfIn PDF document text
    • https://site-1178320.mozfiles.com/files/1178320/socketserver_python_3_example.pdfIn PDF document text
    • https://site-1166600.mozfiles.com/files/1166600/eclipse_configure_android_sdk_path.pdfIn PDF document text
    • https://kutolimog.weebly.com/uploads/1/3/4/4/134435461/nufuzelas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369793/normal_5f97c0fd26b30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377116/normal_5f8d1eefe584d.pdfIn PDF document text
    • https://cdn.sqhk.co/jedelamodafa/c7Mmgfe/pagaji.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/povodijirig/clue_scroll_beginner_osrs_guide.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_off0000df05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF05 5360 bytes
SHA-256: dd6b5527e3befc3a4ceb72061e0fc5d8778488fe238e1b9f26b0d99645401719
font_01_sfnt_off0000f122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF122 11076 bytes
SHA-256: dd031082335d470dcc5ade2098770a54fbe835517655d5ee355870eb8fc6233d

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