Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a9c4d6b0dc2bd2c…

MALICIOUS

PDF

74.6 KB Created: 2021-03-14 06:35:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: f287adb2cdbb379eacbc2f364e03fe66 SHA-1: 570098488cc2396b3effc1cf28befe16c85fdfa9 SHA-256: 2a9c4d6b0dc2bd2ce00e59ae4da72a190c210e358ae169c96e7e4521b3415239
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://xajibur.ru/strik?utm_term=how+do+you+find+the+area+of+compound+figures PDF link annotation
    • https://xapenivivafozeb.weebly.com/uploads/1/3/1/3/131379266/rikigidesofof.pdfIn PDF document text
    • http://legendbilisim.com/how_old_is_marla_maples_nowtmf4m.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/nubovozipudebu.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/dowive.pdfIn PDF document text
    • http://tegor.xyz/675198466879o1e2.pdfIn PDF document text
    • http://topmassage.net/edinburgh_tourism_reportonrgm.pdfIn PDF document text
    • http://vannabanyavsedela.xyz/mesogafitafadikofevavpcouh.pdfIn PDF document text
    • http://bowuvudofi.scienceontheweb.net/xufedowujilaxivazuzizoda.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/33054286279.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/63878293981.pdfIn PDF document text
    • http://nikecortez.net/heredity_and_genetics_vocabulary_answer_keyez94v.pdfIn PDF document text
    • http://znalomstvavip.site/bixuwebedovefuzcauu.pdfIn PDF document text
    • https://safubijob.weebly.com/uploads/1/3/2/6/132682970/somako.pdfIn PDF document text
    • http://leoidet.xyz/6292552235hic7g.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/articles_a_an_the.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/60892640117.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/grammar_past_tense_verbs_worksheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vakizonozajaxe.onlinewebshop.net/nimumoketozegotabar.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_off0000e0b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B5 5692 bytes
SHA-256: 59656e070d333959357198c644e853dc852c9387f059549cac8df112352fb0eb
font_01_sfnt_off0000f404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF404 11552 bytes
SHA-256: 8a45a1b0d3f4a9c318b1765e751b2ee94b7b8242e40b61fb97d30897463b0b60