Malicious PDF — malware analysis report

Static analysis result for SHA-256 efeed8abe2c6352f…

MALICIOUS

PDF

67.7 KB Created: 2021-03-04 20:36:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 918fa473fa72b7b0b6c8fecc91b5f910 SHA-1: 5bd60b3f68c0f02a8d2d8e1d4653790d36cb77c0 SHA-256: efeed8abe2c6352f21ced4ab4d2bd5c4a7bf7eb1b1f7f2444b795a3ae805dac0
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://mezovuduw.ru/wix?keyword=nativity+of+our+saviour+school+portage+in PDF link annotation
    • https://lemefiware.weebly.com/uploads/1/3/4/0/134017231/notenujaliside.pdfIn PDF document text
    • https://cdn.sqhk.co/surikuzezun/vggiahi/rijozaduz.pdfIn PDF document text
    • https://lasapiboxemifol.weebly.com/uploads/1/3/4/8/134865682/xakuvib-fexesagejeb.pdfIn PDF document text
    • https://cdn.sqhk.co/lejesapazud/RigGG2F/38501064069.pdfIn PDF document text
    • https://posesisex.weebly.com/uploads/1/3/5/3/135332701/7480399.pdfIn PDF document text
    • https://zowukabizuvor.weebly.com/uploads/1/3/1/6/131636697/vakadovari-lexuvegafexona-linumiwumabimu.pdfIn PDF document text
    • https://nopeludaseji.weebly.com/uploads/1/3/3/9/133986928/9464278.pdfIn PDF document text
    • https://xuwupeloz.weebly.com/uploads/1/3/4/7/134734270/69442.pdfIn PDF document text
    • https://kuxodebareku.weebly.com/uploads/1/3/4/0/134042390/4246881.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://246406bc-bb0d-4f29-baed-d8a6153a9543.filesusr.com/ugd/3ddeef_a205961475ca43758c420ed8a7657aa4.pdf?index=trueIn PDF document text
    • https://7095e710-59ac-4d27-8a5a-f3bbcaf65deb.filesusr.com/ugd/418e76_ac1480a835994e27b1f5dbb9566855d1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/40f1e52a-e7c0-49d1-8cee-681fd45342bd/how_to_ease_sciatica_pain_in_buttocks.pdfIn PDF document text
    • https://8271b8e8-1520-4b18-8785-2fafc8cd33e6.filesusr.com/ugd/efc97f_c29ddff5575949a2b8ca1b83a3f6b608.pdf?index=trueIn PDF document text
    • https://40e214c1-1950-44e8-a195-e2c6eeb23253.filesusr.com/ugd/a517f4_0468dd6195e54eb0b2d0a830f866b696.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/divikufifir/unusual_baby_boy_names_yahoo_answers.pdfIn PDF document text
    • https://99442e0c-e188-470f-b1e9-a2082f9e7f28.filesusr.com/ugd/2274a7_88a74f88c5c2404badfc5a10ad15fd54.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/asus_rog_battery_health_charging.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/64906630267.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c454d9e6-6e7c-4abf-82fb-e493d362383a/82172195656.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_off0000cb5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB5F 5408 bytes
SHA-256: 09880f02db32f2048602fede9005aa9c1d6fc129c1bbe454a9e0da11bf4ece6b
font_01_sfnt_off0000dde0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE0 10388 bytes
SHA-256: d09bd5b9cb7017615dd094cfd32c31deb09c093c4411b0ef67a34b6a143f973c

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