Malicious PDF — malware analysis report

Static analysis result for SHA-256 29b3b38ec6614b08…

MALICIOUS

PDF

72.0 KB Created: 2021-02-20 16:47:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8a5054618f9798c72c5fbdc93ba79e11 SHA-1: b251bb3ac80643281157eaa20134feb1aceb1ba9 SHA-256: 29b3b38ec6614b0834bc7690aaa10304167c28ed5d216520c7cb4643bb0ceefa
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://jottigo.ru/wb?keyword=why%20was%20the%20jerusalem%20temple%20destroyed PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464722/normal_601387d145e60.pdfIn PDF document text
    • https://kutemipemowu.weebly.com/uploads/1/3/4/8/134860595/riderul.pdfIn PDF document text
    • https://totijavefukaja.weebly.com/uploads/1/3/4/7/134705726/b1b1f9.pdfIn PDF document text
    • https://cdn.sqhk.co/gunonutib/fNzthd5/mobile_phones_direct_insurance.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427282/normal_5fe0fa46e845c.pdfIn PDF document text
    • https://xomitemekebok.weebly.com/uploads/1/3/4/8/134881854/954802.pdfIn PDF document text
    • https://monibobur.weebly.com/uploads/1/3/0/7/130776122/lubanagifumabomiteb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379726/normal_5fe566ebf2389.pdfIn PDF document text
    • https://fogolimavoburaj.weebly.com/uploads/1/3/0/8/130813413/nunet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485012/normal_600b5a4eed865.pdfIn PDF document text
    • https://kitopelok.weebly.com/uploads/1/3/4/3/134355781/5001000.pdfIn PDF document text
    • http://doordash.fun/what_is_engagement_learning_theorymyaxk.pdfIn PDF document text
    • https://fetatoba.weebly.com/uploads/1/3/4/6/134689412/2091686.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/lomiwexuva/soft_skills_in_the_workplace.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/addison_wesley_physics_11_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/86162295486.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/12979827068.pdfIn PDF document text
    • https://s3.amazonaws.com/jigezilor/home_budget_excel_sheet_template.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_off0000dc31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC31 5480 bytes
SHA-256: 9cd805306a54a5d4f80cec5632a17da253c1459bc0440e4716f4007df6ec33a2
font_01_sfnt_off0000eec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC6 10648 bytes
SHA-256: 7cecf2225bf57b44cd63b14f6124318e3743dfa113a5ffea6c518359c26fe29c

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