Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c7934201ad4c4d4…

MALICIOUS

PDF

71.3 KB Created: 2021-02-14 15:47:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3fc106477af8e0932f9088acd131763b SHA-1: 1e0d0d24b44fb37a432749d7d81d70ef3094d45e SHA-256: 1c7934201ad4c4d463283dd649453fca3361b3353a294fec542f4e0f20085001
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/wix?keyword=padi+advanced+open+water+pdf PDF link annotation
    • https://ronenajawewaxiw.weebly.com/uploads/1/3/4/5/134594127/1874814.pdfIn PDF document text
    • https://nuvisinuxaxo.weebly.com/uploads/1/3/1/3/131383681/6517146.pdfIn PDF document text
    • http://foyou.store/manual_de_maquina_de_coser_singer_simple7uorb.pdfIn PDF document text
    • https://jeruxonoja.weebly.com/uploads/1/3/1/4/131407493/7075533.pdfIn PDF document text
    • https://ravemazezaj.weebly.com/uploads/1/3/4/8/134885195/rojiximenoboxisutum.pdfIn PDF document text
    • http://lasleymarkt.ru/73284397432lhp1c.pdfIn PDF document text
    • http://hayatevesigar.online/amarnath_ki_amar_katha91han.pdfIn PDF document text
    • https://sukaxivex.weebly.com/uploads/1/3/4/8/134895869/jijemujolunimog_wejoxibifulevot_lijoborab.pdfIn PDF document text
    • http://butomuzadizur.iblogger.org/12463181605.pdfIn PDF document text
    • https://dojilosadokadog.weebly.com/uploads/1/3/4/8/134890500/zorikinupaxuvape.pdfIn PDF document text
    • http://oneitshop.info/stokke_tripp_trapp_baby_set_cushion_instructionso1w3b.pdfIn PDF document text
    • http://wodasewusinoda.22web.org/84260629065.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/gezejoputiwinu/40992877724.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/soxawomo.pdfIn PDF document text
    • http://fokogemuzaraw.epizy.com/66796336998.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/gokelenaxotilej.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/oxford_dictionary_french_to_english_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/food_chain_activity_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/asphyxia_co_shu_nie_album.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_off0000dc51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC51 5092 bytes
SHA-256: 964475e45ac5796acc948de5ad6bda9b83823ede60ff8a08d55e9438b88c017b
font_01_sfnt_off0000edcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCD 10080 bytes
SHA-256: 3abe2884aa66beadfce571b69fabc1167d758db0807141e5ee01a648698c4bb1

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