Malicious PDF — malware analysis report

Static analysis result for SHA-256 520d40310bb3e80c…

MALICIOUS

PDF

71.3 KB Created: 2021-02-08 19:20:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5bc297964713d348b92741c26f1c7554 SHA-1: 76f076b0a338828d7868de42d9d3a89142721fdb SHA-256: 520d40310bb3e80c00892b300d821b1d7b247a8b085a2bbd300445d792e2e968
126 Risk Score

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/aws?utm_term=matlab+programming+questions+and+answers+pdf PDF link annotation
    • http://edevletorg.com/lofamimukepefukiziwrfom.pdfIn PDF document text
    • https://wirorovikematu.weebly.com/uploads/1/3/1/0/131071137/2494006.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/animal_personality_test4qh0d.pdfIn PDF document text
    • http://eroganoficial.site/66053264712vzloi.pdfIn PDF document text
    • https://butevexonukuzi.weebly.com/uploads/1/3/2/6/132681970/2179571.pdfIn PDF document text
    • http://xabinip.22web.org/cake_cutting_guide_wilton.pdfIn PDF document text
    • https://lefizedut.weebly.com/uploads/1/3/2/6/132681647/4bf99909db.pdfIn PDF document text
    • http://italylife.pro/422798524202i4jq.pdfIn PDF document text
    • http://goldstein.berlin/wopuxogumudax3y18u.pdfIn PDF document text
    • http://xuwivezotuw.22web.org/gift_box_making_templates.pdfIn PDF document text
    • https://kenoduzuran.weebly.com/uploads/1/3/5/3/135350653/f5702c65683af79.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/jupudizadid/benji_bananas_apk_old_version.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/6764021760.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/biodata_form_for_job_application.pdfIn PDF document text
    • http://wewefaxekedafoz.epizy.com/26339104363.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_off0000d8c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C1 5724 bytes
SHA-256: c5f143c68c0e92dd495dc2b27dae8f83b806a5dd598d78d523513437b29dee9e
font_01_sfnt_off0000ec36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC36 10592 bytes
SHA-256: be0b91cad8c887f2f3433da63fd26a48518d809fd369be093522ffc587f42c7d