Malicious PDF — malware analysis report

Static analysis result for SHA-256 254f633bc61ff537…

MALICIOUS

PDF

43.6 KB Created: 2020-11-03 19:12:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 3af04a004608c4cbf03cb4f517ef2ff2 SHA-1: bcd780edc3cdffc0be634e86c977ab54e92e42cd SHA-256: 254f633bc61ff5371b02425f98bb306e2ca72c9373c6fd67cd52be368211f664
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://ggtraff.ru/strik?keyword=legend+of+zelda+level+8+quest+2+map In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370299/normal_5f9074cff34c9.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/digokasawuj-jipamuputevuf.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/1300040.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/9addd009-e1c7-47c3-ae36-c61b804778d5/goddess_toning_program.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/wewires.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/english_to_bengali_dictionary.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/ronazujalijisofu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad868096-7e28-4163-8ee9-2ebf916f7682/41291624536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e902be2b-7200-4a29-8f02-26f2c47e6b5e/79465514534.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/36351284458.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/clinical_pharmacology_and_therapeutics_lecture_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f163a314-84fb-4016-a3d6-b4d8b7313df4/their_eyes_were_watching_god_book_pd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bf2fb4e-245f-4293-bcf4-3395aed688d3/juruxiwusu.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/tam_applied_login.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4A 5768 bytes
SHA-256: 45175829bac4c77addf4748ab827d66adf83ce65e46e47ad56b31120c0b8db78
font_01_sfnt_off00007efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFB 10224 bytes
SHA-256: d853a2e586218b3808c21e160f80ddf0fd73bfb3128ad8d6b9f9263335b54a5a

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