Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fc2773b0675d48e…

MALICIOUS

PDF

71.2 KB Created: 2021-02-28 04:50:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 32ee20262df19e803d9bf5931aca186b SHA-1: 5fa09a2ec2e69c0fddfe07bb1d8ae15b8191aa79 SHA-256: 5fc2773b0675d48ef541b842d4292cff2cd6ec3598919045f06356c6803028b1
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/award?keyword=the+american+journey+student+edition+pdf PDF link annotation
    • https://sovurides.weebly.com/uploads/1/3/5/3/135349611/87a788bdffe27aa.pdfIn PDF document text
    • https://nujujuzizupefe.weebly.com/uploads/1/3/1/6/131606206/6ec86bcec1.pdfIn PDF document text
    • https://vimixake.weebly.com/uploads/1/3/1/1/131164471/9044216.pdfIn PDF document text
    • https://lodotimafigu.weebly.com/uploads/1/3/5/9/135981467/somenatogewuri_kimikoni_gepeka_povisi.pdfIn PDF document text
    • http://kexazejarufag.iblogger.org/76335608824.pdfIn PDF document text
    • https://dazenesulamese.weebly.com/uploads/1/3/1/1/131164173/pijoguletafos-jupaxizanune-nekekidafuv-zizas.pdfIn PDF document text
    • https://gononazenikemad.weebly.com/uploads/1/3/4/4/134482012/ralodovusisaziruxe.pdfIn PDF document text
    • https://dewufore.weebly.com/uploads/1/3/4/8/134857007/66e6e370.pdfIn PDF document text
    • https://luvofebujapima.weebly.com/uploads/1/3/0/9/130969865/aada2c8.pdfIn PDF document text
    • https://fumeseteno.weebly.com/uploads/1/3/1/4/131483149/2285757.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
    • https://s3.amazonaws.com/zuwosil/autonomous_maintenance_training.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/ebmt_2019_poster_guidelines.pdfIn PDF document text
    • http://zakuvusebaj.epizy.com/11568354743.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/mawusoradevufa.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/15362111534.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/beginners_guide_to_daily_fantasy_football.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/94471944635.pdfIn PDF document text
    • http://zivikabazixo.epizy.com/streptococcal_sore_throat.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/accounting_information_systems_11th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/17415231.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_off0000cb7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB7F 5372 bytes
SHA-256: 3eadd4c7b4e5610c685d04ac5dd75114d5722aa6407d70e04b74a002c560b4f4
font_01_sfnt_off0000dda3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA3 10452 bytes
SHA-256: e77543169a4d4bf3048cb6b685e9ba322263cc4d792d5c84ab9faf9c1a788c49
font_02_sfnt_off00010164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10164 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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