Malicious PDF — malware analysis report

Static analysis result for SHA-256 f12e1424937b629b…

MALICIOUS

PDF

36.9 KB Created: 2020-10-11 22:53:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 15962ed6e0c3e1cdbec9f28d208f142a SHA-1: 60f5f8d2dbbd6aadd7a7ed578e13f77f7017b561 SHA-256: f12e1424937b629bb2e90cb1c4e6323918976b161b5bf25de1cbb8aa6a930a96
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/pify?keyword=mini+slow+cooker+liners In PDF document text
    • http://vesipiz.southwesterngmtc.com/uploads/1/3/0/7/130776483/kexet.pdfIn PDF document text
    • https://site-1036996.mozfiles.com/files/1036996/19736486769.pdfIn PDF document text
    • https://site-1037009.mozfiles.com/files/1037009/kisemax.pdfIn PDF document text
    • https://site-1037273.mozfiles.com/files/1037273/fadufiwelekut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2552/3103/files/wireless_doorbell_for_cats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/4870/2630/files/clash_of_clans_hack_gems_generator_without_human_verification_or_survey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2077/1751/files/13805272780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59e208c3-9295-4696-bd2a-82b5f3cd00d4/fejakumakowufexumirobomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a20a4683-215a-447e-a278-9643c7262bb7/bafisewupikepifiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c28fe6c8-c57b-42ef-afa0-369d4375c789/jopatasusesaturabasafim.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5402 4744 bytes
SHA-256: c6003fad7bcbb6d97e293f3d502206c10e9bffed446f6be3f3ec96ce9ea27547
font_01_sfnt_off00006452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6452 10288 bytes
SHA-256: 0ad659781f47dcf3de4a202372bf8c3964de2b15081d8d9626be6e85aea7b849