Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ca78d2b3e600169…

MALICIOUS

PDF

44.6 KB Created: 2020-10-07 17:07:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 6ed52a7450d5ca3cd69934dac1507515 SHA-1: f441c890762fc8decb12e99eecaae9a8042d93bf SHA-256: 6ca78d2b3e6001690380d1dcd52e06955a30a8b5e8d71547377391ecaa34ea2c
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://ttraff.club/pify?keyword=pokemon+giratina+strikes+back+passport In PDF document text
    • https://site-1037228.mozfiles.com/files/1037228/91562672593.pdfIn PDF document text
    • https://site-1037187.mozfiles.com/files/1037187/talodegogezim.pdfIn PDF document text
    • https://site-1040977.mozfiles.com/files/1040977/30123463570.pdfIn PDF document text
    • https://site-1043519.mozfiles.com/files/1043519/padabebaxurederufig.pdfIn PDF document text
    • https://site-1038440.mozfiles.com/files/1038440/jizowivudafeposokozol.pdfIn PDF document text
    • https://site-1036750.mozfiles.com/files/1036750/sebuximovadapulapomu.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/3304e981-af19-4beb-bbf0-7e21dc39d84f/34329057163.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4b67f5c-3ffc-4ff2-b72e-9ce1091d911f/4338819624.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce275c05-5de8-4586-b950-e896d01f9eda/kugavawatajafun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d4281bd-d622-4b1c-bd63-e7aa8ff5d413/31112146737.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e98a4df1-619c-4e58-a101-6e0538539922/virema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38d8e110-d140-4d84-990f-9346493c5c69/69587058737.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/942f47d3-3534-49f5-9f50-15404da69a5d/mitabep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aa3ee0d-fff3-4402-a29e-72fb5873fb60/94730051963.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85179742-116b-4c38-81a4-da25a57efec7/63183014679.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4acb4b2-d336-489d-a5b0-5b215a142b46/9610145891.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_off00006629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6629 5424 bytes
SHA-256: 5b68f58b884c6bf28288f90dd7f24b9f3d98bf6a56e3cf2228b330cc0b3873cd
font_01_sfnt_off0000788d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x788D 14560 bytes
SHA-256: d5c17a5fa04a86a57a4af5ab2ca01e77f6b243a1b579cb355970b4944d6a34da