Malicious PDF — malware analysis report

Static analysis result for SHA-256 21eb03610678ced6…

MALICIOUS

PDF

70.3 KB Created: 2021-03-01 12:16:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c928b5eec84a4e31b061a09bb8971343 SHA-1: 4140106d30233314ede1ae118b9dd11bc5c0c508 SHA-256: 21eb03610678ced6b2d015fffef072c2c2d0c5ece2b76eb7a6e68dda34d04963
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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/award?keyword=minn+kota+terrova+i+pilot+remote+battery PDF link annotation
    • https://cdn.sqhk.co/buwuvibija/jaRZwRl/car_mod_for_minecraft_pe_1._16.pdfIn PDF document text
    • https://lifinupal.weebly.com/uploads/1/3/5/3/135336288/1e6dae7a4a71a41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465259/normal_600f2d36a4894.pdfIn PDF document text
    • https://cdn.sqhk.co/fazejitev/jbhdeif/city_gangster_game_video.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414871/normal_60006999bc889.pdfIn PDF document text
    • https://tixusevonatafix.weebly.com/uploads/1/3/4/6/134611731/3939592.pdfIn PDF document text
    • https://padawevuwelidas.weebly.com/uploads/1/3/1/4/131438111/xifiluvologepi.pdfIn PDF document text
    • https://digagewopaloz.weebly.com/uploads/1/3/4/6/134634746/zagarozuni-fajezo-bozezovereg.pdfIn PDF document text
    • https://ramexolilaburav.weebly.com/uploads/1/3/4/3/134331107/1371057.pdfIn PDF document text
    • https://cdn.sqhk.co/marixefe/hfqECjh/tajewusuxuzekefu.pdfIn PDF document text
    • https://cdn.sqhk.co/gesokusa/ZhgUhcx/31459458033.pdfIn PDF document text
    • https://pipamoximiketo.weebly.com/uploads/1/3/0/9/130969724/fitakisanimomus.pdfIn PDF document text
    • https://nedotumawu.weebly.com/uploads/1/3/4/6/134626041/58ea576b9a2cd54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378845/normal_603c6891da365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379035/normal_6011e6a5a126b.pdfIn PDF document text
    • https://dakikizubebara.weebly.com/uploads/1/3/4/8/134889455/9708215.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/lonozote/castbox_android_auto.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/be_happy_hd_images.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/acura_rdx_2017_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/25484469971.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/granny_smith_apk_deutsch.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/statin_therapy_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/41912198737.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/25386659053.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/zajutezegadisobedasago.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_off0000d32b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD32B 5156 bytes
SHA-256: 1078416dc3551303e4516ce6642a9acf53d622331833a748078a5b82cb8ef8f2
font_01_sfnt_off0000e4b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B9 10808 bytes
SHA-256: 442d5aab598796651e3a8857abda370664a201802e217428b00221768551a758

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