Malicious PDF — malware analysis report

Static analysis result for SHA-256 3608a38a299030df…

MALICIOUS

PDF

72.2 KB Created: 2021-03-04 07:59:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9ad22f5b40e1205916112e134065299a SHA-1: 8ffabab9c220c52b4cbf049c3ca6d82bd82489dd SHA-256: 3608a38a299030dfd77b918f774200d7ed0342e11c9dba93cd7bc8f32ba154d3
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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://dafemum.ru/award?keyword=buy+tarot+cards+online+cheap+india In PDF document text
    • https://static.s123-cdn-static.com/uploads/4501980/normal_5ff144a7ec31d.pdfIn PDF document text
    • https://cdn.sqhk.co/vavewiminiv/kgfP4gd/spectacular_meaning_in_bengali.pdfIn PDF document text
    • https://cdn.sqhk.co/xoguvamev/4gjAJhj/38976764378.pdfIn PDF document text
    • https://cdn.sqhk.co/fedelubu/wlhhY2K/82441842439.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387566/normal_5fe03459a7e5b.pdfIn PDF document text
    • https://cdn.sqhk.co/virixerusupa/1PGgeib/gabokogubefomi.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/G2Sgiix/english_short_stories_to_improve_english.pdfIn PDF document text
    • https://cdn.sqhk.co/zorezikuluz/dEgepxN/text_book_app_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/rowojazur/hjqhfic/instagram_captions_for_couples_at_a_wedding.pdfIn PDF document text
    • http://lazirog.mywebcommunity.org/hundreds_chart_mystery_picture_free.pdfIn PDF document text
    • https://cdn.sqhk.co/zufutetuwume/hhigjdV/cnc_pilot_4290_service_manual.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/legapatatezisa/loud_doorbell_sound.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/rewosimonoluruga.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/15422231573.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/hiv_and_aids_information.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/business_card_template_free_uk.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_off0000dec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC9 5312 bytes
SHA-256: a51f4a46181cf97eab6ac4bc02d6e98d807f8e5c30df35720c1f01c0cfb31b98
font_01_sfnt_off0000f0d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D7 10408 bytes
SHA-256: 6fefebba50314bf9a52181e363143b24e12088ac4011073a4463a0f9d34c560d