Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5b93ce008d54c80…

MALICIOUS

PDF

72.7 KB Created: 2021-02-26 09:11:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 33a54807aafcdcdad0132c1f6c8c256a SHA-1: 7da539d94a821f4205e953f6ba56ffd639602dac SHA-256: e5b93ce008d54c80638ecbdffc6fb679edd874f6750697b15ca7b89d59fd7f0f
196 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.
  • 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://druttle.ru/award?keyword=how+to+set+chime+on+gemini+alarm+system PDF link annotation
    • http://kopuvimu.scienceontheweb.net/what_to_put_inside_a_first_aid_kit.pdfIn PDF document text
    • https://xebutalumibafa.weebly.com/uploads/1/3/1/0/131070398/bef30d54f65.pdfIn PDF document text
    • https://cdn.sqhk.co/mafokesaxuvi/je9qtie/messenger_lite_apk.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/2725012710.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://momibur.rf.gd/what_is_the_constant_r_in_the_ideal_gas_law.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/befunky_new_version.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/kendo_mvc_grid_clienttemplate_javascript_function.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/merulilejujiritomanizo.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/mejipavixowitefunetusi.pdfIn PDF document text
    • http://pavefobigemaxe.rf.gd/6989609039.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/latunozobujedozowuwap.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/income_guidelines_for_medicare_and_medicaid.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/94665412918.pdfIn PDF document text
    • http://vaguwiraji.rf.gd/navurugifefejim.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/pdf_to_doc_converter_zamzar.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/ancient_egypt_civilization_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/juvivuzazaba.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD511 5156 bytes
SHA-256: 70543a02bfcab7d55eb7b356916b4eb3282272b15d02fef2432e209c1944317f
font_01_sfnt_off0000e67b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67B 9580 bytes
SHA-256: 65d72dc7116b5d5401448a2c66397d1c6341d60679312fc23005a811a208fa57
font_02_sfnt_off0001075d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1075D 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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