Malicious PDF — malware analysis report

Static analysis result for SHA-256 715568428b3c9063…

MALICIOUS

PDF

72.9 KB Created: 2021-02-22 11:02:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 84f63358dc40f12fda7c5eec8cdeb05b SHA-1: 3f0526f2a745a7f201d46ddd4e3fe6a4a2d13f5f SHA-256: 715568428b3c9063286fe0dfe6efa85f0c442820b43e80a335c86b8f038c09f1
196 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.
  • 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://jacksth.ru/wb?keyword=which%20of%20the%20following%20is%20an%20example%20of%20general%20deterrence PDF link annotation
    • https://fatomomome.weebly.com/uploads/1/3/1/6/131606630/8716315.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxugaveg/dhhhgZV/ghost_rider_toys_marvel_legends.pdfIn PDF document text
    • https://tugesarafexo.weebly.com/uploads/1/3/5/3/135319839/zozebimobabaram-juxefep.pdfIn PDF document text
    • https://wivozodibadire.weebly.com/uploads/1/3/0/7/130775536/750e3d6bd8b841.pdfIn PDF document text
    • https://mawebexakonu.weebly.com/uploads/1/3/4/3/134390129/tupakuku.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvifilezaja/jjbhg2t/reconfigured_or_reconfigured.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485436/normal_5ff769b7ac6a1.pdfIn PDF document text
    • https://solawelosadi.weebly.com/uploads/1/3/1/8/131857655/2e50ae08dd.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/hJihHg3/fasox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384155/normal_600f0b6f85d50.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/divelatoxa/sifetonopog.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/19920106406.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/stylesheet_example_qt.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/59725223871.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/40451689612.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/nekimexonez.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/soundtrack_drakor_angel_s_last_mission_love.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/bose_radio_instruction_manual.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_off0000de86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE86 5740 bytes
SHA-256: acfb14e20a59982f24e3c10343520f490cbbbf7bc18b52ce8d0577f8c37bb656
font_01_sfnt_off0000f20c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF20C 10616 bytes
SHA-256: 3a4b54ee65f8f1a892d91e725d9a3f36de3ab9d9ecc13b74fd2085590bb0ac14

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