Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ec8160ccf26d62c…

MALICIOUS

PDF

66.5 KB Created: 2021-02-17 13:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1716a8424505b3d814910ebd7f95a561 SHA-1: ab928176092ab2961f0210776cf1baa5c9568548 SHA-256: 5ec8160ccf26d62cf14c06311ceb3d4752e6d807b8a15855bafe9d4d2707cc9b
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://leonvi.ru/wix?keyword=presidential+power+worksheet+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4471706/normal_5febda7d991cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425759/normal_600a4f5a92a34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420930/normal_5fd2e08e9098a.pdfIn PDF document text
    • https://zipuwuxa.weebly.com/uploads/1/3/4/3/134376087/fosunaxulogapa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420018/normal_601aced667762.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446647/normal_60257fb89e6e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454041/normal_5fe2767322536.pdfIn PDF document text
    • https://dawifibikinofi.weebly.com/uploads/1/3/4/6/134682228/garujovowuvodadaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476758/normal_6021f882596aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451035/normal_602cf6fa8313d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422914/normal_5feb9db037fb5.pdfIn PDF document text
    • https://gagoxesuv.weebly.com/uploads/1/3/2/6/132681450/jumiketobugafaxokuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389080/normal_60290562c5433.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450434/normal_6016df2c34d8a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380707/normal_5fc69f94b511d.pdfIn PDF document text
    • https://liberiloro.weebly.com/uploads/1/3/4/5/134589576/7d8e8f7269.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sugosubexez/cap_reporting_breast_cancer.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/picsart_mod_apk_happymod.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDBE 4992 bytes
SHA-256: dca8137b2b010eedb4166de97e2fe7b5363853e1887f1c42b7c818a20b6e5d95
font_01_sfnt_off0000ceae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAE 9328 bytes
SHA-256: 13aa5c791aac3cb9b7da46b4c525a3b7a36108bb2a526cb89456e1f060df0160
font_02_sfnt_off0000ee78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE78 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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