Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d099d7e3f787c35…

MALICIOUS

PDF

70.6 KB Created: 2021-02-24 06:44:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6fcc4e201308a918f9ade90df2467d92 SHA-1: 0e14599e6a1c47317d7af0f457432464f9b21d1a SHA-256: 0d099d7e3f787c3543c5253b11f51a394aa9f518614ae11caa9f3d7f6017a3bd
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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.
  • 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://crophysi.ru/wix?keyword=hex+to+utf8+c%2523 In PDF document text
    • https://viwukafum.weebly.com/uploads/1/3/0/7/130738591/liniwuvoresaj.pdfIn PDF document text
    • https://cdn.sqhk.co/kurinunuwor/hdgjDrR/57491639905.pdfIn PDF document text
    • https://cdn.sqhk.co/jafetegupam/jjBTAmn/ice_cream_rome_tripadvisor.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosexotak/59QKjfe/12525071020.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/jwWYFha/capitalism_a_love_story_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_60246ff778667.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421333/normal_5ffa162736c10.pdfIn PDF document text
    • https://gosalojuwik.weebly.com/uploads/1/3/6/0/136050429/jaxoxuluwedekim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446400/normal_5fe16f3c7495d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385617/normal_6014ee7ada9a8.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/lezerawe/tijupozadobuluwakomit.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/92559165281.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/eviction_notice_template_va.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/pikelapavepuravugidisafe.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/qualified_audit_report_disclaimer.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/xotejojatisomekozojesevom.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC191 3356 bytes
SHA-256: d2050578c937ef61b968183c7ddf6e855c85c838ccfdd13fb840d96365de03bd
font_01_sfnt_off0000cd85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD85 4584 bytes
SHA-256: bcc328e93755b1b143e22f4bc9cd53b331181107016d450e4b43a77944550555
font_02_sfnt_off0000dd3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3A 1936 bytes
SHA-256: 21a7146106e2ad29a4dcc6aa55cee169416400570e2b3d493b6d071cb256f2f3
font_03_sfnt_off0000e67c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67C 11340 bytes
SHA-256: f68124ac3404affa1d3a8683cb00981970d6d6b8f9d8ca7d21a2cf65a871cfb2

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