Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e0eef9604dff9f6…

MALICIOUS

PDF

35.8 KB Created: 2020-11-03 06:35:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: c25e5c5d82e9d72f30e640e7784b2c1a SHA-1: 03cac9019d0d23cbc260c6ef2f3df8e7514156b1 SHA-256: 3e0eef9604dff9f63d29d0ba578eb1727e4b1b60eb2668322679d52bdd096193
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://cctraff.ru/aws?keyword=mass+extinction+pogil+answer+key In PDF document text
    • https://dawiganolakegoz.weebly.com/uploads/1/3/4/3/134367714/625764.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/bb8ca.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/97d46bf6-177b-4243-a410-d399b033a2de/xebugi.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/42522015134.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/ccc_mcq_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2114330f-7792-46e9-bc64-d7740d1da061/test_de_competencias_laborales.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/midterm_review_packet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/belgrade_metro_map.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/55083937261.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/bloodborne_strategy_guide_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b8fd481-ed4e-4eac-bb8f-ea7d667b6c0a/55728099245.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23fb3db1-1912-4721-878b-64574574b771/85166960963.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000414f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x414F 5220 bytes
SHA-256: a5e02379dd8dbd8b8cad5bd5d9b3121a705539321f31cf6a44c0fd930a15261a
font_01_sfnt_off00005332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5332 9744 bytes
SHA-256: 9189eebb8b93399ecc6263987d6b6649d43acb32f61bdc8e6db740ab94bc0368
font_02_sfnt_off00007482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7482 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f