Malicious PDF — malware analysis report

Static analysis result for SHA-256 577c2988cd36fb73…

MALICIOUS

PDF

100.6 KB Created: 2021-02-24 08:42:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: b844787f75a18ec73777c7dc31e80489 SHA-1: 26afec0e7ccc48d6ce793b4824f8efd0a0a72cdc SHA-256: 577c2988cd36fb737a9dc848731cd3f6021798885b3d5d457d42e022f9527fd3
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs point to suspicious domains, suggesting the document's purpose is to redirect users to potentially harmful sites.

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://jottigo.ru/wix?keyword=central+and+inscribed+angles+in+circles+worksheet PDF link annotation
    • http://card2card-perevod24.site/download_real_flight_simulator_rortos_mod_apk74u9v.pdfIn PDF document text
    • http://lnstagramoriginal.com/tesunorelesafaniwun24kc.pdfIn PDF document text
    • http://ledy66.net/50895181884gq5pb.pdfIn PDF document text
    • http://websecurer.tech/ponte_en_forma_cocinando_con_ingridsyouz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372753/normal_5fe179633f620.pdfIn PDF document text
    • https://xukonixivuki.weebly.com/uploads/1/3/0/9/130969652/9323cee.pdfIn PDF document text
    • http://discout.online/how_much_does_a_regional_manager_make_at_planet_fitnesszjhuk.pdfIn PDF document text
    • https://woxamaxepid.weebly.com/uploads/1/3/0/7/130776503/lurinoj_betem.pdfIn PDF document text
    • https://dujeranisijoku.weebly.com/uploads/1/3/0/7/130776063/2355709.pdfIn PDF document text
    • https://tiwirekofer.weebly.com/uploads/1/3/5/3/135314588/1094302.pdfIn PDF document text
    • https://vanewuzopawibo.weebly.com/uploads/1/3/0/8/130814706/6a5b8eb21e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376127/normal_6000d6c9a30fd.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/silubebebefuju/ziravukesuxolivagebopido.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/candy_crush_apk_mod_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/3167046825.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/11878690678.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/beginners_guide_to_intermittent_fasting_16_8.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/french_present_tense_forms_of_attendre.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/envision_energy_international_limited_annual_report.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_off00014357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14357 2828 bytes
SHA-256: dd7b880f1c6958317b71933e3175eb4154b1281d355b69180e4ce829e506ee21
font_01_sfnt_off00014d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D51 5404 bytes
SHA-256: 2c409140a7169728f220ab3b50e14a10df6bdc1f002918e64242a00b79ff54c0
font_02_sfnt_off00015fb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FB3 10084 bytes
SHA-256: 266797d89725f1577d580cd2910a5820f9415949b55ea4c670a922c921e19761

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