Malicious PDF — malware analysis report

Static analysis result for SHA-256 20fe77f34dc0e41d…

MALICIOUS

PDF

42.4 KB Created: 2020-10-04 13:55:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 8f780e25e98cb6be819426ee9ae1b2d9 SHA-1: 7c135499a8c7419ac29f7da70e7473c51b010ae5 SHA-256: 20fe77f34dc0e41d31e77a0ab6ad92b5d20a99c008a9609d55481e9c790b753c
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/pify?keyword=mother+nature+costume+party+city In PDF document text
    • http://fopatusif.trailersplussales.com/uploads/1/3/1/8/131856278/2147434.pdfIn PDF document text
    • http://files.magicartsstudio.com/uploads/1/3/1/4/131408942/lawubezalej-tudekado.pdfIn PDF document text
    • http://files.apostrophe1.com.au/uploads/1/3/0/8/130874485/6449875.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/8adf021f-0a44-4f8c-9a4e-96f38451c64c/sasatamuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/239a396f-f885-486d-a90a-54a997ad48db/seteroboge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85e9c2c9-1299-4a4f-ac5a-f2ed83bf20a0/25187643495.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93470b9d-41bd-4c76-8849-fbfd5d646e0d/nenaretofifigenerodonezig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1412dac-e46d-449c-8f04-87622ec92a4e/kobidiwidurififo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceff5728-0b37-40f3-a1c7-0d581c1d0c06/kukevabigajapeluz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41310f1b-c9cd-42a6-a1d0-54e70c40fc0b/kewonekeluruko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1213b7fc-ef11-4fde-854d-627c12091d29/wusazivikaso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fc39a9c-daab-4db0-ab72-a811938163d3/76402232699.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c40838cc-18ae-4140-938c-77c16b41d07b/zesesu.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 3

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6864 5248 bytes
SHA-256: d6a310bf411dc644cd8fa0f91d146ee77dab721b2f128393cbbf59294be1adb7
font_01_sfnt_off00007a24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A24 10196 bytes
SHA-256: 4d5a6a474b043b4e8e1b5235c2d4cfb05d1c21c68e0eafb864f5bb1c59c5af7c

Open this report in the interactive analyzer, or submit your own file for analysis.