Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e15c9640af3946d…

MALICIOUS

PDF

106.0 KB Created: 2020-11-04 10:20:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-09
MD5: 442fc76cfd730a4260f3924a90ddca76 SHA-1: 85448243879369b813506a8731d4665a97aff640 SHA-256: 5e15c9640af3946d2fcc466dcd68b877ff6518ea06da696af1ebd68d74661894
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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/strik?keyword=steam+siege+setlist In PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/limin_razubutakuxot_pepaxakofotes_mofaka.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/amazon_tankless_water_heater_propane.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/the_difference_between_vowels_and_consonants_in_english.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406776/normal_5f9b52e150793.pdfIn PDF document text
    • https://fomomeku.weebly.com/uploads/1/3/2/7/132712435/jemosi_pafuruxofuta_gumowadolomiweb_wisepera.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/xideritegode.pdfIn PDF document text
    • https://kudumegowejo.weebly.com/uploads/1/3/4/2/134266354/riwetuzixov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378175/normal_5f91492f8d88c.pdfIn PDF document text
    • https://pajedurozibije.weebly.com/uploads/1/3/4/4/134446399/3440773.pdfIn PDF document text
    • https://wajabanafeku.weebly.com/uploads/1/3/4/5/134599300/7151479.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00014ba1.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00014ba1.bin)
    • 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 extracted file (font_01_sfnt_off00014ba1.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_03_sfnt_off00018401.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_03_sfnt_off00018401.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000132d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132D4 7240 bytes
SHA-256: 349d55a44ce61a52810702cb1b37021c6a9a1295fab80c57ed1c253095d40032
font_01_sfnt_off00014ba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BA1 5012 bytes
SHA-256: 9fefd58bf43f317992d71384adc9496a760f616c65db29382af61e8591ceda67
font_02_sfnt_off00015c9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C9D 11788 bytes
SHA-256: 63087d0459d2c2e2791cabfdff77a8be0607433d6727fab3a8ad4cc20e07f13d
font_03_sfnt_off00018401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18401 16060 bytes
SHA-256: 1018660efa6a1a00280f0dbd6ee9814149b2344b9acf14d98de2cb76d1e712aa