Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc695b0c65ee956…

MALICIOUS

PDF

76.0 KB Created: 2021-02-19 03:47:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d840faf62af8886d81940f74b5c14122 SHA-1: 1de7817b34a7b8bd3bbd928172db68e4958e33a3 SHA-256: 9cc695b0c65ee956afa177a9cc243ab4bb7b8ebe0cd01e80f3dc43d343b95398
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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.
  • 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://crophysi.ru/wix?keyword=nuclear+chemistry+worksheet+answer+key In PDF document text
    • http://gmetry.online/how_to_code_in_python_programminggoqyy.pdfIn PDF document text
    • https://bidawuvebera.weebly.com/uploads/1/3/5/3/135390130/7361198.pdfIn PDF document text
    • https://magagitu.weebly.com/uploads/1/3/5/9/135959352/bemomipekelunubenu.pdfIn PDF document text
    • https://jibokogemi.weebly.com/uploads/1/3/4/7/134767321/941ca6.pdfIn PDF document text
    • http://rorezorejadij.iblogger.org/briery_creek_fishing_report.pdfIn PDF document text
    • https://wisenuru.weebly.com/uploads/1/3/1/8/131856959/belunusiromoso.pdfIn PDF document text
    • http://tixshopclub.fun/love_nikki_dress_up_queen_mod_apk_download336w2.pdfIn PDF document text
    • https://gowumobajakexe.weebly.com/uploads/1/3/4/5/134585768/gitofarejaga-wafawiv-nevepebofo.pdfIn PDF document text
    • http://zufabud.22web.org/nivel_de_lectura_critica_o_valorativa_ejemplos.pdfIn PDF document text
    • https://puzugisebo.weebly.com/uploads/1/3/1/4/131438758/c9d46617429.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://momesesewoja.rf.gd/spinal_cord_injury_file.pdfIn PDF document text
    • http://tizebowikono.rf.gd/free_printable_fraction_subtraction_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/97080134624.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/chrome_shutdown_after_complete.pdfIn PDF document text
    • http://xonelamurojili.rf.gd/pofag.pdfIn PDF document text
    • http://jezawijevot.rf.gd/application_manager_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/51704240981.pdfIn PDF document text
    • http://dodarululi.epizy.com/binijetopobebe.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_off0000ee19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE19 5268 bytes
SHA-256: 0ae565bf7dfccb3b55d3a8710c72684d579a702035b2157c4568c62fdc45d1ab
font_01_sfnt_off0000fff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF3 10168 bytes
SHA-256: 78545c7c2596d394130223ed7758846c90f68794b57e29d4f336f332de374bd4