Malicious PDF — malware analysis report

Static analysis result for SHA-256 b58e8cefd428f3d3…

MALICIOUS

PDF

71.9 KB Created: 2021-02-25 15:06:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4372c3cc106a2e50746c876d8fa2db41 SHA-1: 9eb7854b2c5e1f47f1266a19f7567d43f08d2419 SHA-256: b58e8cefd428f3d3ab263c42a326efcd8bd21a3d11c7eb872fa8eeb4042366e8
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://leonvi.ru/wix?keyword=dokkan+broly+eza+guide PDF link annotation
    • https://cdn.sqhk.co/gixezovof/Fp4eDhe/17104434069.pdfIn PDF document text
    • https://cdn.sqhk.co/vekosozob/ehhgiaO/hot_rod_lincoln_pulling_car.pdfIn PDF document text
    • http://xiwakaravivomik.scienceontheweb.net/soposuludap.pdfIn PDF document text
    • https://mezuxanivatanid.weebly.com/uploads/1/3/4/4/134499991/zivavurozamiropuf.pdfIn PDF document text
    • http://gosoxegekiri.mywebcommunity.org/how_to_treat_adderall_withdrawal.pdfIn PDF document text
    • https://cdn.sqhk.co/konidadelan/jhjaQhM/punch_boxing_3d_mod_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/gedugari/jNYGxoZ/farmer_in_the_dell_walpole_ma_02081.pdfIn PDF document text
    • http://navevukosuso.mypressonline.com/74025110586.pdfIn PDF document text
    • http://tifoxikutawe.sportsontheweb.net/omron_evolv_upper_arm_reviews.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wadoromutisagar.myartsonline.com/93142608516.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/58062082501.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/duelist_leveling_guide_poe.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/rurijebav.pdfIn PDF document text
    • http://gaxilitexu.onlinewebshop.net/why_is_my_samsung_tab_3_running_slow.pdfIn PDF document text
    • http://vunonam.atwebpages.com/99984779851.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/dasipewesarosusosebomusag.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/fosowatovazum.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/jemisuxu.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/vepenukag.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/vevuguwexosu.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_off0000de85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE85 5168 bytes
SHA-256: ff5cd68540c090002a8e8195db1595aacd464f7a36e9b1b7acd2bfdaa1fc348f
font_01_sfnt_off0000f041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF041 10020 bytes
SHA-256: b64eaec075bff1de0c390f6088020e9304bd2aa26c1b89ce5c06da25377bb06e

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