Malicious PDF — malware analysis report

Static analysis result for SHA-256 155bad11522e3dee…

MALICIOUS

PDF

51.7 KB Created: 2020-10-01 00:00:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 63bc0a825318e596435b8a4e3b69f51a SHA-1: 5643c1b1c4284f4915576a3abff0fa5962e8963b SHA-256: 155bad11522e3dee71596c0db49fd328cb3d66557eec179cd84f4e3bbcd16951
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://gettraff.ru/strik?keyword=crossfit+workout+routine+for+beginners+pdf In PDF document text
    • http://files.saigonshoppingcenternj.com/uploads/1/3/1/8/131872203/586411c5f319bfa.pdfIn PDF document text
    • http://tixikoju.fengchange.com/uploads/1/3/0/8/130873995/tepibusulodatip_xiduj_zimodojafakafix.pdfIn PDF document text
    • http://files.childspiritconsignment.com/uploads/1/3/1/3/131398135/a7554295.pdfIn PDF document text
    • http://gepoxu.extravagantadvent.com/uploads/1/3/2/7/132741269/nupupewotijigu.pdfIn PDF document text
    • http://files.revelstoketheatrecompany.org/uploads/1/3/0/9/130969169/2630587.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e25d440-0d12-492a-9f28-0225661da500/goruv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea836f87-411c-48df-a1fa-1325cdd7e321/30879587630.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa752c16-3b44-4d6a-baae-bcf27889e846/gewosivewuzuvozer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/292c66c6-4af1-4ca2-8fbc-41a6d83ac11c/gaxaxojeximixu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f9d1dc9-67bb-4ddf-85e6-d98971b37a84/vuvozusuzimanimidat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6746db9-2fbf-4cf7-82c8-5035cf87b1c7/52633619675.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59ddbb32-1677-4232-9a86-985187b0066e/24663447040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/sudigitilakegovefet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/13997854715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/rilibuneku.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000755b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x755B 5168 bytes
SHA-256: 752da7683b6aeb29ad2eb3de7bec597909b399231628956a601e31ef6f3f8073
font_01_sfnt_off0000870c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x870C 5012 bytes
SHA-256: d6a78c63255ab441b49e033f1529ea58957c56e1c61d3d975305952a58a14353
font_02_sfnt_off000094b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94B5 14296 bytes
SHA-256: 2ca73b1dbd6ca2074ba4b46bcd302f5eab94d16e858c7a9ccd602002283ed22e

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