Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e0903d4f807faf9…

MALICIOUS

PDF

46.9 KB Created: 2020-11-07 06:18:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 26e633d06592945cd72cb8e23d3119e1 SHA-1: ff0a7078b054a727dae68c14c8c3ce4f96f5e939 SHA-256: 6e0903d4f807faf9be86df0188885fad3d399bd13e42a902fb13349fb50e3728
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?keyword=sprinter+the+game+hacked PDF link annotation
    • https://sugosagugijew.weebly.com/uploads/1/3/4/5/134584769/549789.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409604/normal_5f94230ea0eeb.pdfIn PDF document text
    • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/8621294.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372105/normal_5f8e780ddaefe.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://tibepitetuj.files.wordpress.com/2020/11/bivonetekobulidipekebo.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/45425926676.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e08955c-9df7-4695-9874-16177f13bb33/stormwind_summoning_circle_location.pdfIn PDF document text
    • https://nevosaxovib.files.wordpress.com/2020/11/vuvemi.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/usps_zone_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ccd20bc-4384-4b3d-b1a7-41f1d077746b/aq_power_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/washington_nursing_commission_complaint_form.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/john_the_ripper_brute_force_telnet.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_off00006a80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A80 5124 bytes
SHA-256: 83dce0fd50d0e846b5eeecc234c197ebd7f5c461bf22ec6577b457b2471ff11b
font_01_sfnt_off00007bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB1 10824 bytes
SHA-256: c9743be4b9856f81b8fbe1e9854aaf97a5bc65ed7bf8ef87cab57ee07739aeab
font_02_sfnt_off0000a093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA093 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e