Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a079252af12c9cc…

MALICIOUS

PDF

66.5 KB Created: 2021-01-31 21:32:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 081f02383c6af18776c1ad2bababe5c3 SHA-1: 302a9677da2e9fa77a4120bf7558d42d4ef97629 SHA-256: 0a079252af12c9cc254693e775cad7f6d8c2f88fedc706adc41091b10eb49146
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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 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/aws?utm_term=background+images+hd+1080p+free++nature In PDF document text
    • http://gayerkan.com/goxasujalakalabopovewexyta.pdfIn PDF document text
    • https://webapifupa.weebly.com/uploads/1/3/4/7/134706955/danozoxizi.pdfIn PDF document text
    • http://tiktokfrance.fun/sharecropping_contract_summarylepai.pdfIn PDF document text
    • http://leomannapov.com/5870757689142e48.pdfIn PDF document text
    • https://vawuzusafut.weebly.com/uploads/1/3/4/8/134863851/56c17dd22.pdfIn PDF document text
    • http://xavelodezazil.iblogger.org/6789123383.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471481/normal_600b60c9c52a7.pdfIn PDF document text
    • https://bulugigedi.weebly.com/uploads/1/3/4/7/134714886/ronefikamikowo-lutokinimis-tefebuful-zanufikisev.pdfIn PDF document text
    • http://help-lnstagram-verifycopyrgiht.com/xubidafefopoduh68je.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452835/normal_600d0a4b61ebc.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/befarekogol/kluang_mall_store_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/65773156624.pdfIn PDF document text
    • http://loxosufodu.epizy.com/lapifexanojezojalunelisim.pdfIn PDF document text
    • http://tiworetaganufo.epizy.com/perideloji.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/75387853884.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_off0000c4f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4F5 6040 bytes
SHA-256: 1d17c449c192f8b2be8f0b6bd8f0ed49fafaaea85a4ee92f6cf16ab9451632d3
font_01_sfnt_off0000d962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD962 10436 bytes
SHA-256: f637519c5ecc05a3f5e555f87c103c07619758f8536d9c7bdca91977b0562fff