Malicious PDF — malware analysis report

Static analysis result for SHA-256 6706525e0455be3b…

MALICIOUS

PDF

86.7 KB Created: 2021-03-08 20:08:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4041519b1a93abdf264285c4666aaf2d SHA-1: 34d00bca4a6eb82766bf31d47e6d973d92e954a5 SHA-256: 6706525e0455be3b17ed7058607127ed5b3be204ca0d23c0fa3ff31916d7632c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dafemum.ru/award?keyword=jboss+application+server+architecture+pdf In PDF document text
    • http://kuvesukide.iblogger.org/how_big_should_a_tv_stand_be_for_a_55_inch_tv.pdfIn PDF document text
    • http://gemubanabugawa.mypressonline.com/79747934673.pdfIn PDF document text
    • https://xifupanudolegu.weebly.com/uploads/1/3/1/1/131164204/bamaxem.pdfIn PDF document text
    • https://japafapu.weebly.com/uploads/1/3/1/4/131437770/getiza.pdfIn PDF document text
    • http://cabinetshub.xyz/the_history_of_love_free_downloadu6zj1.pdfIn PDF document text
    • http://gedadekenoz.mywebcommunity.org/saganivugu.pdfIn PDF document text
    • https://fawirato.weebly.com/uploads/1/3/5/3/135392883/monina_binajik_rozafimava_tovelozevoxezob.pdfIn PDF document text
    • https://nipujari.weebly.com/uploads/1/3/1/3/131384055/nebexadeluriwowi.pdfIn PDF document text
    • http://dfahsdfgjsfg.online/what_happened_to_the_dresden_files_tv_show0mvkz.pdfIn PDF document text
    • https://sujanumijixedi.weebly.com/uploads/1/3/4/5/134501714/lamomixikeku.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/jalapev.pdfIn PDF document text
    • https://fulopovesaj.weebly.com/uploads/1/3/0/7/130740112/6746400.pdfIn PDF document text
    • https://xugibadibexupov.weebly.com/uploads/1/3/4/6/134684970/tofepupekugopa.pdfIn PDF document text
    • https://bubebozozuj.weebly.com/uploads/1/3/1/8/131871643/xodojododamevinafota.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
    • http://nevabaza.atwebpages.com/mosuterototirewujegemem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03394858-fc01-4f43-839c-f1f0614fa988/culturally_responsive_teaching_strategies_for_african_american_students.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0034db6-c325-4dce-abbf-e730cd5e9cee/97549561052.pdfIn PDF document text
    • http://vivulipepuk.epizy.com/metro_last_light_redux_trainer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d31a8aa-7f45-42d6-8b63-0501befe6712/65638927396.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eb2b2f2-e819-435c-9397-1f9452310189/is_the_movie_run_based_on_a_true_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf0c953f-d2ea-477f-a11a-523694b11d52/innova_3020d_how_to_use.pdfIn PDF document text
    • http://nabavewixetutax.epizy.com/hue_city_travel_guide.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_off00010906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10906 5316 bytes
SHA-256: 1b687b93281b81bb9ecc79c23c0a61260381cc50a69006ac6e3e8e4c829da0ec
font_01_sfnt_off00011b00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B00 10456 bytes
SHA-256: c9e529ad9f99b3f37e32f7a132ff506f84a576bf5ac604bd0aa42231fd3719bf
font_02_sfnt_off00013e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E99 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176