Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eb52f7607d295b9…

MALICIOUS

PDF

72.3 KB Created: 2021-03-02 00:15:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d3c33b0fc5156c9768633cbc73a7558b SHA-1: cdef950910e237468a5899a1031a5621855167c4 SHA-256: 1eb52f7607d295b98cee911077f3cdc0c660db0250aa81c885e018ca982a55dc
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/wix?keyword=don%2527t+let+me+be+lonely+book+pdf PDF link annotation
    • https://wumifidadorubip.weebly.com/uploads/1/3/5/2/135298964/pamejinuxoduti_faxefenafa_nojuzefal.pdfIn PDF document text
    • https://pananufizusa.weebly.com/uploads/1/3/4/4/134445813/lakiwodonokob_pokamode_zekusano.pdfIn PDF document text
    • https://daxixulo.weebly.com/uploads/1/3/1/0/131070202/pabokorobezusejalixa.pdfIn PDF document text
    • https://maxanijalezo.weebly.com/uploads/1/3/2/3/132303118/sudub.pdfIn PDF document text
    • https://wumigativagulam.weebly.com/uploads/1/3/1/6/131637174/3707698.pdfIn PDF document text
    • https://jadilojapup.weebly.com/uploads/1/3/5/3/135313437/2587168.pdfIn PDF document text
    • https://tetunabirudav.weebly.com/uploads/1/3/0/8/130874278/vebiwago.pdfIn PDF document text
    • https://piturerakilapes.weebly.com/uploads/1/3/0/7/130775197/xovosazudejimi.pdfIn PDF document text
    • https://tufelovewojamex.weebly.com/uploads/1/3/4/3/134331554/2512659.pdfIn PDF document text
    • https://mapaluloxusogor.weebly.com/uploads/1/3/0/7/130739646/temuzojagofu.pdfIn PDF document text
    • https://jojapewabivato.weebly.com/uploads/1/3/1/3/131379205/03ae56d.pdfIn PDF document text
    • https://wugeneziwepuzi.weebly.com/uploads/1/3/4/4/134494794/c5673df21.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/timeziso/broadsheet_best_coffee_melbourne.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/bard_of_blood_full_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/cfbc_boiler_efficiency_calculation.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/15086301614.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/rofatiseju.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/98725891230.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/fovezimalamotare.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/asus_zenfone_5z_pie_update.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/linux_grub_boot_loader.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_off0000e0b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B6 5040 bytes
SHA-256: 59c763972cf010d8b0b7082147095d520b08baabf3259ee9247932d69bad83c0
font_01_sfnt_off0000f1e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E2 10136 bytes
SHA-256: 352107650462bbb6a3c7b3285d0da1b272b8c7d72d7e5434db7718fc63668fbc

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