Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee49791f8d34e8cf…

MALICIOUS

PDF

78.1 KB Created: 2021-01-12 12:42:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ecb1a322ac4bfc3ef6642aeaa16a2d0b SHA-1: 1fce1bd7a3c1a5b127d23fa2af01c85df947a386 SHA-256: ee49791f8d34e8cfe9106d6d3b588aa176f38bd318db545118e8b63f49d0a639
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains numerous links designed to redirect users to external websites, masquerading as a link farm for free downloads. The presence of malicious redirector links and a high ML classifier score indicate a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to exploit vulnerabilities or trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffine.ru/123?utm_term=bridgetown+music+festival+2020 In PDF document text
    • https://site-1166703.mozfiles.com/files/1166703/tupowujanizazanowanajug.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/hgGAiio/xawoburojunomegijikonalu.pdfIn PDF document text
    • https://site-1230768.mozfiles.com/files/1230768/free_movies_and_tv_shows_app_for_iphone.pdfIn PDF document text
    • https://wenuzivubog.weebly.com/uploads/1/3/5/3/135392435/2322003.pdfIn PDF document text
    • https://femevidawivuk.weebly.com/uploads/1/3/1/0/131071063/xawixaravoniv.pdfIn PDF document text
    • https://site-1185312.mozfiles.com/files/1185312/birthright_israel_contact_information.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/6IJTcij/16716998814.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/xesigeze/rise_and_shine_kylie_jenner.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/rikugofe.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/yaari_avneet_kaur_song_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/game_brother_in_arms_apk_obb.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF150 5816 bytes
SHA-256: 284eb9a885ec7c814f6734225e19f7e4d1c2364ba297063c114e0fab3fdc57d3
font_01_sfnt_off00010527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10527 10796 bytes
SHA-256: 28444da8a3f028ece012ccb1fc36b3368d1dd22bf987cabbb65ca3e04f418d99

Open this report in the interactive analyzer, or submit your own file for analysis.