Malicious PDF — malware analysis report

Static analysis result for SHA-256 6690b6af0c53a145…

MALICIOUS

PDF

68.9 KB Created: 2021-01-31 12:01:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4a7dad199e82ff252d75a60171c8be8a SHA-1: d3585e3f2feb7b54276551e534b74cd9f3cde39e SHA-256: 6690b6af0c53a145d77066fc4d844ccd0c614af79972a69f382cb416b6be9a0b
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://maypoin.ru/aws?utm_term=laser+guided+concrete+leveling+machine PDF link annotation
    • https://veguxalefimas.weebly.com/uploads/1/3/1/3/131382166/4c51ebaf.pdfIn PDF document text
    • https://modulofironufi.weebly.com/uploads/1/3/4/4/134402713/3441191.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374715/normal_600b6ad5f0dbe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385214/normal_5fe18c407a4a4.pdfIn PDF document text
    • https://saxunada.weebly.com/uploads/1/3/4/8/134865385/dobar.pdfIn PDF document text
    • https://nadatipaj.weebly.com/uploads/1/3/5/3/135347779/nerimosiwaze_sevidedelirav_kobewasipo.pdfIn PDF document text
    • https://fiwugepupuladav.weebly.com/uploads/1/3/4/7/134740110/a4d344b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485695/normal_5ff51f30acc23.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418565/normal_60006962c1e00.pdfIn PDF document text
    • http://nopisodozig.66ghz.com/jezuxasoxawobapogilagu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ribaxekag.epizy.com/foodie_blogger_template.pdfIn PDF document text
    • http://badavusepewojo.epizy.com/ga_dnr_trout_stocking_report.pdfIn PDF document text
    • http://gotikomerutoj.rf.gd/jaxasuxit.pdfIn PDF document text
    • http://wereguvepowu.epizy.com/chunky_heel_platform_boots_designer.pdfIn PDF document text
    • http://wesovipimamino.epizy.com/firusiragogurewan.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_off0000cf33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF33 5356 bytes
SHA-256: 04807f551c3f7e8ef890a0f4bbabcba87c3818bec055b370e76c66e7958e82d0
font_01_sfnt_off0000e144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE144 10960 bytes
SHA-256: c2d901f575c3c970e7fb6673ffcbd20a83958f247c225bd7c8caa4cca889184d