Malicious PDF — malware analysis report

Static analysis result for SHA-256 69eab7477687aa00…

MALICIOUS

PDF

72.1 KB Created: 2021-03-02 15:55:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6b3b063410a81ccdae4544b80c35e91c SHA-1: 527a3cf1228e99b4a85661f2318428d9f8e25fc8 SHA-256: 69eab7477687aa006ad930c105bb13b7d41cda46a6483a38a44618469fe9d924
196 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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=knight+rider+ringtone+free+download PDF link annotation
    • https://zedowami.weebly.com/uploads/1/3/1/6/131637063/3017356.pdfIn PDF document text
    • https://zazobowelukoki.weebly.com/uploads/1/3/0/9/130969428/besozekabub.pdfIn PDF document text
    • http://totakonepis.iblogger.org/early_stage_rheumatoid_arthritis_in_hands_treatment.pdfIn PDF document text
    • https://jimivisimobud.weebly.com/uploads/1/3/4/9/134901817/7287895.pdfIn PDF document text
    • https://fojojaroj.weebly.com/uploads/1/3/1/4/131453509/5155081.pdfIn PDF document text
    • https://sajolunuweto.weebly.com/uploads/1/3/1/4/131407571/nafawirufejego.pdfIn PDF document text
    • https://kowalarezanir.weebly.com/uploads/1/3/1/4/131438161/6168affae10.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/vavebufevodutob/35816711957.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/asphalt_7_android_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/bikaduv.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/infective_endocarditis_guidelines_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/93292115828.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/h_m_mens_ring_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/netflix_android_app_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/75396686182.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/sportspower_15_ft_trampoline_instructions.pdfIn PDF document text
    • http://fefekug.rf.gd/dolby_atmos_apk_for_oneplus_6.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/gajibupizosufubamovewawi.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_off0000ddf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF0 5052 bytes
SHA-256: ef55a82e148d7f04e0325ce08b74c31e05bb04ca88de7df8df31c610bb2a6e2e
font_01_sfnt_off0000ef34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF34 10528 bytes
SHA-256: a3472a944733a89e8ce023819cb3fbf4b7d5db87255593bc6dd24cbf3f9b4317

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