Malicious PDF — malware analysis report

Static analysis result for SHA-256 1379b35cfc833f43…

MALICIOUS

PDF

70.2 KB Created: 2021-02-07 06:17:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 45b68027611d96123ea970689f0a24ed SHA-1: 7280ed78213063eb7b86bf516719df672f3bd743 SHA-256: 1379b35cfc833f43524fc859f33ddceb87b24658ae5a3737d7873b0f0476be07
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=poe+pantheon+guide In PDF document text
    • https://static.s123-cdn-static.com/uploads/4393189/normal_5ffd37bc90327.pdfIn PDF document text
    • http://jodesomuxuduzu.22web.org/mupudujupovakawavige.pdfIn PDF document text
    • http://gatorama.site/kof_98_um_ol_apk56vwc.pdfIn PDF document text
    • http://denizan.com/melurebuxawoasllc.pdfIn PDF document text
    • http://pedrons.space/tornado_foosball_table_for_sale_near_mes9jg3.pdfIn PDF document text
    • http://coins24h.com/87796418922frb5k.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/vatakefojunib/64036701035.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/zaputununogoxapazonovodi.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/60272285862.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/beyond_the_lights_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/dr._ampoule_dual_mask_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/58365267150.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/sociological_literary_criticism.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/prefect_letter_of_application_template.pdfIn PDF document text
    • http://magomodatibotu.epizy.com/asokan_inscriptions.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_off0000d72b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD72B 4916 bytes
SHA-256: 2ec4b0f9790f866707b8138c0e00a9ec5d26049adc5647358d31ede9e81f65a1
font_01_sfnt_off0000e7e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E8 10732 bytes
SHA-256: 6597aa02b3f1fe8b6cb5f85a79c224e1c4b7eb279d812dcddcd4bea5a99053b3