Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a8113dc55bd2471…

MALICIOUS

PDF

66.8 KB Created: 2021-01-23 21:50:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 05aa175db710611e3fac9b71876a6877 SHA-1: df4c281f46c9cef284c59f77c6f3c9850dee0f9e SHA-256: 9a8113dc55bd247172d696311ed790a891ea739cd8698e556f15045dc4b59546
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://trafftec.ru/wb?keyword=t%20mobile%20park%20holiday%20event PDF link annotation
    • https://bonopabugo.weebly.com/uploads/1/3/4/5/134581776/8018360.pdfIn PDF document text
    • https://tolonatapuxid.weebly.com/uploads/1/3/4/0/134042297/4111560.pdfIn PDF document text
    • https://site-1167971.mozfiles.com/files/1167971/talasetokizirolavu.pdfIn PDF document text
    • https://site-1177523.mozfiles.com/files/1177523/89627978807.pdfIn PDF document text
    • https://site-1172418.mozfiles.com/files/1172418/vodotu.pdfIn PDF document text
    • https://tekigeja.weebly.com/uploads/1/3/1/3/131384442/3377231.pdfIn PDF document text
    • https://site-1249342.mozfiles.com/files/1249342/mpsc_nic_emandi_emis_mandi_loginform_loginnew.pdfIn PDF document text
    • https://site-1184137.mozfiles.com/files/1184137/el_monster_island_apk.pdfIn PDF document text
    • https://mewupigokudupez.weebly.com/uploads/1/3/0/7/130738506/sifuvan-tisupojaxiwer.pdfIn PDF document text
    • https://jafobepajimo.weebly.com/uploads/1/3/4/8/134881918/1206886.pdfIn PDF document text
    • https://kiragidemi.weebly.com/uploads/1/3/0/7/130775435/9418996.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/putelekireza/er_app_apk_for_firestick.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/10926468491.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/41785767382.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/medogotoditemolifon.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/favumunasidowi.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/excel_2010_bedingte_formatierung_formel_textinhalt.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/caravana_da_coragem_dublado.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c87a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC87A 5336 bytes
SHA-256: c2bb272c87d3980465386625665e097528a601b224cae1663ddc69be414e43f7
font_01_sfnt_off0000da75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA75 10424 bytes
SHA-256: 455c55d03029312426c3abf28e2cdd89509c0aedcefbd8b78c99bf3273c85239

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