Malicious PDF — malware analysis report

Static analysis result for SHA-256 7deb7e15c6e86b66…

MALICIOUS

PDF

70.9 KB Created: 2021-02-18 00:58:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8f7e19d16a0a9584b4a5307a402e1a64 SHA-1: f8aae03886c26f18486666e3f98e9c30c9aa525b SHA-256: 7deb7e15c6e86b66a9d814a36a246b18f19139e4e86306b0c37fc823ebdb89f1
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://jacksth.ru/wix?keyword=vampire+diaries+season+5+free+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425511/normal_6011b465c33e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377095/normal_5fd626f7d4c14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481999/normal_5ffa80113aa76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367308/normal_602d2ce4908f3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383452/normal_6002554669f9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498986/normal_5ff95de5194b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454435/normal_5fd78cc647dc4.pdfIn PDF document text
    • https://cdn.sqhk.co/niwexifa/fOCichj/bimefilazisefifilemowu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475203/normal_602b0a463db87.pdfIn PDF document text
    • http://cparta.moscow/bagotubxz39d.pdfIn PDF document text
    • https://cdn.sqhk.co/pibavasedegi/Agj6hjD/tumisezavavodofedosevewu.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/xuxifuzituwu/3812834944.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/monolithic_system_in_performance_appraisal.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/broadview_security_keypad_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/wazejesawupavarimojeponul.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/blablacar_apk_deutsch.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/58813916714.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_off0000da3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3B 5276 bytes
SHA-256: 50281feeee6689fdc52b63cfe493d5ef72daecd1c514002324500b2c5ea846cc
font_01_sfnt_off0000ec1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1E 9984 bytes
SHA-256: b2a1963f0e9d1568447d86dba7d9b16c05cfebc86c55162bb258c3b1d0a15f33