Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e02d836047fee0…

MALICIOUS

PDF

49.2 KB Created: 2020-10-27 08:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: b3f1b315223b57ba486245266003a54c SHA-1: adbb43aef60c81d0e8f97c13ccbe36fe5271044c SHA-256: e8e02d836047fee0df11813b855571986db3257e5eaba5a696c1fdabd10282aa
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ttraff.me/123?keyword=worx+compact+circular+saw+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380076/normal_5f8fd35ce5004.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386080/normal_5f94e8b0e7975.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420013/normal_5f96a50f2d52b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385421/normal_5f931d6635295.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f8762416ea93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383586/normal_5f96509129d49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407813/normal_5f93244e76aae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367952/normal_5f92eb871f589.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403689/normal_5f95b96099e5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383132/normal_5f9770dbaff2d.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/8574332.pdfIn PDF document text
    • https://gezeteweni.weebly.com/uploads/1/3/4/0/134040803/biradoz.pdfIn PDF document text
    • https://mipolapepel.weebly.com/uploads/1/3/4/3/134395859/7ffa920d91d8a7.pdfIn PDF document text
    • https://wejakoguxi.weebly.com/uploads/1/3/4/3/134324676/39de26082.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/caste_list_in_karnataka.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/english_book_9th_class_punjab_textbook_board_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/3758074024.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/zulinotazigesuniv.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/fragrance_wheel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eec0fd87-4654-4ea2-9cee-8f8922a1afb5/kannada_audio_songs_dj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/824f53a3-a67d-44ae-b66b-724fde4b0afb/15632837752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf32aef8-4113-4361-9fa3-6d7ae1ca7bb2/dukafoxenipelironaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e3f8569-1b73-4dc9-998e-370705669233/xivirikademelikifusenedob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7014e23d-a7ab-4428-bf85-8e53b6acfab0/31610350129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e493edb6-6915-4512-a737-8ba95f62bfbd/zenalesowa.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_off0000818c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x818C 5252 bytes
SHA-256: 37771e316b236afb2b4edb997016109881697c1f27b800a9db1a4ad7911b7bfe
font_01_sfnt_off0000936c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x936C 10580 bytes
SHA-256: 75e9345bc7603ff760b835d31e39efae685b55d08b2afe17279b4385aa14e614