Malicious PDF — malware analysis report

Static analysis result for SHA-256 f93ef2d57f7d2b07…

MALICIOUS

PDF

69.1 KB Created: 2021-01-24 11:20:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 72589e2bb8911d5515eb5d8d069f031b SHA-1: c57615c18157a96f14b78730cd1c0bb66596294b SHA-256: f93ef2d57f7d2b07ba9a57d11ae2a8df153a7ee5ccc6e0d00e459d50af648cb0
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting or link farms, suggesting an attempt to redirect users to malicious sites. The document body, though heavily obfuscated, appears to contain text related to recipes, likely serving as a lure.

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 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://bologen.ru/wb?keyword=simple%20vanilla%20cupcake%20frosting%20recipe PDF link annotation
    • https://cdn.sqhk.co/wugolekufo/giijRge/rapid_water_parks_in_west_palm_beach.pdfIn PDF document text
    • https://xozowozorero.weebly.com/uploads/1/3/2/6/132695390/85e32f58ed0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495244/normal_5ff8784c8f7a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459776/normal_5ff498ae4916f.pdfIn PDF document text
    • http://vikidavilor.22web.org/response_to_ethical_clearance_letter_template.pdfIn PDF document text
    • https://vidisuxusa.weebly.com/uploads/1/3/1/6/131606291/1502406.pdfIn PDF document text
    • http://barurizex.iblogger.org/edexcel_examiners_report_2018_maths.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505358/normal_6001a90329355.pdfIn PDF document text
    • https://cdn.sqhk.co/mekerijiwuv/ijjfhbu/star_trek_fleet_command_refinery_latinum.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/ggyrlmX/tokulepevoliwevul.pdfIn PDF document text
    • https://nojamatisi.weebly.com/uploads/1/3/1/3/131384142/3390982.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/cjdEheC/famous_ai_hashtags.pdfIn PDF document text
    • https://cdn.sqhk.co/fojilude/98ijFhj/pupabudokiraxobiz.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/ZhfIIrN/70154488464.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://verirajoxa.epizy.com/nujikuvitodoronubeleleta.pdfIn PDF document text
    • http://segixiw.epizy.com/30811637256.pdfIn PDF document text
    • http://lisotabisalak.epizy.com/atomic_theory_of_matter.pdfIn PDF document text
    • http://pozijirume.rf.gd/top_android_mod_apks.pdfIn PDF document text
    • http://zopefunexot.epizy.com/33738054773.pdfIn PDF document text
    • http://luloxefisamo.rf.gd/employee_accident_report_form_uk.pdfIn PDF document text
    • http://fabonek.rf.gd/public_policy_analysis_book.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_off0000d061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD061 5560 bytes
SHA-256: bfe65f89aab0a28b30c1b28c3913d3476318f1c368baa6311f0229bca26869b1
font_01_sfnt_off0000e342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE342 10472 bytes
SHA-256: 4868205c5de27a9e6260e03dd07f16749ab39d8b16a778bffd24c069341975b4

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