Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4ce04883f2e278b…

MALICIOUS

PDF

84.1 KB Created: 2021-02-26 15:28:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 73fb8d77cdbfc4666a53967807c8f8b5 SHA-1: f2820b35f3d38bba9313dfdbf89378cb80b966da SHA-256: d4ce04883f2e278b56fb0bd801759e5b0b6eca0284db20289b4c36169abc2414
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://leonvi.ru/strik?utm_term=the+5th+wave+second+book PDF link annotation
    • https://fixubosadad.weebly.com/uploads/1/3/4/6/134658154/08181ba.pdfIn PDF document text
    • https://gadiziwit.weebly.com/uploads/1/3/1/4/131406086/bajazuri.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410731/normal_6005234157448.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470828/normal_601cd17e6c9e6.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolaseja/jjLsa5Z/best_settlement_defense_fallout_4.pdfIn PDF document text
    • https://cdn.sqhk.co/tiviluluje/ge63BRx/plants_vs_zombies_download_unblocked.pdfIn PDF document text
    • https://mifuvepezomiluf.weebly.com/uploads/1/3/4/3/134312517/c8fcc71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376404/normal_602975d688051.pdfIn PDF document text
    • https://cdn.sqhk.co/rosavuzezig/jdf5jaO/musizabazesararuzesu.pdfIn PDF document text
    • https://fajimidisuwa.weebly.com/uploads/1/3/1/6/131606183/05610ea76fc729e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405639/normal_6005174607c20.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/sosupejuxofedo/bavesizowixisilovedovagaz.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/xuxurudafopeka.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/simple_weekly_planner_template.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/34213719059.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/27164273834.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/ccie_wireless_3._1.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/69197121043.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/44952204414.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/68689551388.pdfIn PDF document text
    • http://xeziredo.epizy.com/kitovib.pdfIn PDF document text
    • http://zukegavodobuxas.epizy.com/bernhard_schlink_der_vorleser.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_off00010c56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C56 5328 bytes
SHA-256: 5d42399cbc5c3ab31fbfb74ee125745ebc210d505aa181a20431d2b5000f60d1
font_01_sfnt_off00011e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E90 10828 bytes
SHA-256: 9864014889de4f301f43fefe27d9b44d623261ab45aaba108cc0c616633d0956

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