Malicious PDF — malware analysis report

Static analysis result for SHA-256 53a0db6ddb4f7af6…

MALICIOUS

PDF

69.6 KB Created: 2021-02-20 10:16:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b03124c6283a9e1fac5811284acdbe34 SHA-1: 5e55b1225894cc95b9fef9ed32055517412c8fe4 SHA-256: 53a0db6ddb4f7af63dc01401df90020e3d5153af7c6e94a4ef16d901374343de
186 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
  • 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/wix?keyword=vibrant+manual+boost+controller+instructions PDF link annotation
    • https://tumugisoluxadez.weebly.com/uploads/1/3/4/6/134601474/notalibam.pdfIn PDF document text
    • http://raxanoxev.22web.org/laravel_excel_load_template.pdfIn PDF document text
    • http://romeita.space/fractionation_technique7dgw0.pdfIn PDF document text
    • https://berijuwijupev.weebly.com/uploads/1/3/1/6/131637896/4ec8af6b74.pdfIn PDF document text
    • https://xalojuxovev.weebly.com/uploads/1/3/0/7/130774978/2698854.pdfIn PDF document text
    • http://womenita.fun/how_to_read_yahoo_finance_stock_chartvldsq.pdfIn PDF document text
    • https://kezexawu.weebly.com/uploads/1/3/0/8/130814062/ddf5c8ea.pdfIn PDF document text
    • https://nilelaji.weebly.com/uploads/1/3/0/7/130775665/wezusiditibowid.pdfIn PDF document text
    • https://dozajumeguru.weebly.com/uploads/1/3/1/3/131379069/sikijosalitimago.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456686/normal_5ff46552edf6d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495551/normal_5ffac1e881922.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384480/normal_60041312bcdd3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416490/normal_5fce6c44f0501.pdfIn PDF document text
    • http://vnds-v.website/24478863772ge3ho.pdfIn PDF document text
    • https://sileperu.weebly.com/uploads/1/3/1/4/131406390/midorifakevobolefowe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sewogixura.rf.gd/vamif.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/schengen_visa_application_form_switzerland.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_off0000d476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD476 5048 bytes
SHA-256: 4385a44e41077c94042dd1408884350af2e0978f553296b7c2570faa8b4f88e3
font_01_sfnt_off0000e58a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE58A 10452 bytes
SHA-256: 7b82e7be2df65b6bf66f326b2ef91547b31ef8b22566ee130f37b64a673378cf

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