Malicious PDF — malware analysis report

Static analysis result for SHA-256 40f087bd78aa66b4…

MALICIOUS

PDF

66.8 KB Created: 2021-02-16 20:22:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d105ad295b7bc6aaf912071993a3b594 SHA-1: c38c092d52b9e857d1e70c8ccde7a039ac54b548 SHA-256: 40f087bd78aa66b4a6e7e5402597129ed4d00fac6ee2301fd109b14130eba44d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=giancoli+physics+5th+edition+answers+pdf In PDF document text
    • http://mrshadow.net/wood_cutter_pro_reviewsbrqwa.pdfIn PDF document text
    • https://cdn.sqhk.co/jofijoju/YDdOljf/dog_rescue_adoption_near_me.pdfIn PDF document text
    • http://instapresent.site/stairway_to_heaven._mp3jlknt.pdfIn PDF document text
    • http://detomebokiv.iblogger.org/14875925727.pdfIn PDF document text
    • http://mivofalo.22web.org/jujadukinefaburo.pdfIn PDF document text
    • https://cdn.sqhk.co/mopomotop/hZzvYEi/funny_video_whatsapp_status_download_sharechat_telugu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467019/normal_5ffcb76d23d2d.pdfIn PDF document text
    • http://sitatazidib.iblogger.org/10087733193.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499958/normal_5ffd79a84aa04.pdfIn PDF document text
    • http://dapodulasopo.iblogger.org/ferulic_acid_derivatives.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501212/normal_60021fb2390de.pdfIn PDF document text
    • http://naturebiolog.fun/atomic_theory_quiz_answersv3d0h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://naziniri.epizy.com/printable_myers_briggs_personality_test.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/aquaculture_international_author_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/managing_finances_spreadsheet.pdfIn PDF document text
    • http://nasedelowose.rf.gd/wozudisidixo.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/dunudiwogulavikoributage.pdfIn PDF document text
    • http://dunupepemogakiw.epizy.com/zikepere.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/gurozasesofatatifogezux.pdfIn PDF document text
    • http://lobakixadob.epizy.com/57924839962.pdfIn PDF document text
    • http://ropanosuge.rf.gd/22849317916.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_off0000c734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC734 5592 bytes
SHA-256: eaf17a0d2bfd17b6ab992a1cac16903a150aa90ed3e1105dc0907f0fed079c93
font_01_sfnt_off0000da52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA52 10536 bytes
SHA-256: 23463f8cce3dca52153e5a655c9ae98045e527f2bf51b78b6fd340109f6d5c5c

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