Malicious PDF — malware analysis report

Static analysis result for SHA-256 0237e101e6911fdd…

MALICIOUS

PDF

65.8 KB Created: 2021-02-19 06:45:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2774f12fe2166427719f80fdf3f6592c SHA-1: c67082141d33d522bc199f4583a79b08ffdda893 SHA-256: 0237e101e6911fdd937ae9162a6876da3789d5e4893bac13fdfac2cfef8bff03
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yafferge.ru/wix?keyword=ministerio+de+alabanza+fuego+de+dios In PDF document text
    • https://vixufavem.weebly.com/uploads/1/3/2/6/132683014/madejuroti.pdfIn PDF document text
    • http://profapp.pro/semimeguwaloniiel7r.pdfIn PDF document text
    • http://gebajajax.22web.org/motifoxo.pdfIn PDF document text
    • https://gunobapeve.weebly.com/uploads/1/3/4/7/134706327/rebororotujizudokuko.pdfIn PDF document text
    • http://getsalle.xyz/8256268792a057d.pdfIn PDF document text
    • http://sabuxaki.22web.org/jai_ganesh_aarti_audio_song.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vomajifinudunu.epizy.com/seramig.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/rutederezasajisusedulo.pdfIn PDF document text
    • http://gevorewububew.epizy.com/jakedekavasobatumedo.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/android_one_phones_in_pakistan.pdfIn PDF document text
    • http://jirizaxewusi.epizy.com/33513203584.pdfIn PDF document text
    • https://s3.amazonaws.com/xofalepelala/27743546680.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/ivoclar_stump_shade_guide_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/jololazelopuvekosabemen.pdfIn PDF document text
    • http://xupudajiwozov.epizy.com/99904480912.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_off0000c204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC204 5268 bytes
SHA-256: dbb940a2766b6d258bb12a04c98697e47db15ec274f977db7f2f4806757097a9
font_01_sfnt_off0000d413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD413 11204 bytes
SHA-256: faab852e1ad4d4e9ce0bbd2bc88a1a2620d771070178b7a087598e9423bead02