Malicious PDF — malware analysis report

Static analysis result for SHA-256 f118c7eb2aee2e13…

MALICIOUS

PDF

73.5 KB Created: 2021-02-13 11:06:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bd5a66b5d079071c4a7de196bef0b82b SHA-1: 80746c91c0067a790330fff71045c1c68fdc7471 SHA-256: f118c7eb2aee2e13d82e83c11d3f27a99f904accdd21f2dcde3ce5ea794ea334
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/aws?utm_term=anti+terrorism+act+2009+bangladesh+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4386839/normal_5fc705b7f2766.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/gfiaggF/activity_launcher_app_drawer.pdfIn PDF document text
    • https://cdn.sqhk.co/kagalitisup/Yhfjgie/foribedigenebosulitededew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404983/normal_5fd7f63911b4e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379744/normal_5fcfaacdda67f.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/giQEMic/10th_syllabus_maharashtra_board_2019-_20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486351/normal_6023e133a502d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468554/normal_5fe4f5f19ab36.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379970/normal_5fe4be5054af2.pdfIn PDF document text
    • http://xoxinusenavi.66ghz.com/74430493638.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386361/normal_5fd741797b380.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lozepis.epizy.com/34095443198.pdfIn PDF document text
    • http://wemiwapava.epizy.com/uke_chords_chart.pdfIn PDF document text
    • http://zolorame.rf.gd/new_meme_template.pdfIn PDF document text
    • http://mokodipixa.epizy.com/logov.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_off0000e18c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18C 6128 bytes
SHA-256: 930082c4c444ada7d3bb861e2377ab05da8f29b20452be8e621038754d9b12e1
font_01_sfnt_off0000f628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF628 10280 bytes
SHA-256: a4643e23ceb46ff340ce3625e80a8b273f206a699dc167f07c67bb7fa64c63d2