Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa59225c7f07e32…

MALICIOUS

PDF

81.2 KB Created: 2021-05-05 21:47:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5600640b787606fa5f2edfb1ca0151d4 SHA-1: e9dbe6a63190027a77b7a16fabfcc0702dca98bf SHA-256: 0fa59225c7f07e32a712914b0528bfe6b454d3abd68c8fdd8f0b3c42a1cc2547
186 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 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
  • 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.
  • 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://druttle.ru/strik?utm_term=best+survival+food+uk PDF link annotation
    • https://gujejitemisadud.weebly.com/uploads/1/3/4/3/134354005/7921814.pdfIn PDF document text
    • https://genopajixon.weebly.com/uploads/1/3/1/4/131452954/4515388.pdfIn PDF document text
    • https://lipuguxe.weebly.com/uploads/1/3/0/7/130738524/soloruvaza-nemuzanuweji-worupupirufomuz-poxesizu.pdfIn PDF document text
    • https://fagugirawax.weebly.com/uploads/1/3/4/3/134388021/legumumuvur-zaritenusagim-fufemidi.pdfIn PDF document text
    • https://cdn.sqhk.co/kufagilan/6iagfG3/casino_card_game_online_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463559/normal_5fe5683ac1145.pdfIn PDF document text
    • https://gogiwujuduk.weebly.com/uploads/1/3/4/3/134352159/tabuluvoj.pdfIn PDF document text
    • http://wazepewazivulil.mywebcommunity.org/61596924043.pdfIn PDF document text
    • http://fibiver.mygamesonline.org/pioneer_sph-da120_installation_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuputid/XBLhi7T/77257650298.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467560/normal_602f4b6e2a230.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375708/normal_5fe2c61a14593.pdfIn PDF document text
    • http://nitanupemil.mygamesonline.org/rxp_gtn_750_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482849/normal_5fc9619044320.pdfIn PDF document text
    • https://pujowelitolav.weebly.com/uploads/1/3/1/4/131438356/e9065a0d373b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468819/normal_6038352b72de2.pdfIn PDF document text
    • https://sapobukemofox.weebly.com/uploads/1/3/5/9/135974899/zuvele-kewefir.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/sazixipame/98644269673.pdfIn PDF document text
    • http://kamigawox.atwebpages.com/intervening_variables_in_research.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/nissan_almera_n16_manual_free.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_off0000fe6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6E 5076 bytes
SHA-256: 1c0f1c41b36904bf69f54b136e8ea4f88decd1558d1f392aae3d85e35402eedf
font_01_sfnt_off00010fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FCA 11664 bytes
SHA-256: f0f79d07e8f97e8561869324d67e91492354a4d3a04ed17a2348d5ea5ca40b39

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