Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7aec34e1b26781f…

MALICIOUS

PDF

71.6 KB Created: 2021-02-23 01:57:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0c8a3d6fa15db7439de4c22893b7daeb SHA-1: 4af8b8796be93dca0ca18f53473f555259606ffa SHA-256: e7aec34e1b26781f190988291726653ad1064f2d22a18efa5c17cdcca29d3848
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/wix?keyword=aminophylline+loading+dose+and+maintenance+dose PDF link annotation
    • https://kadezejuvi.weebly.com/uploads/1/3/4/6/134603763/5a211080e81.pdfIn PDF document text
    • https://fafefojesuvun.weebly.com/uploads/1/3/4/6/134651362/866fea846.pdfIn PDF document text
    • https://luvodufugatese.weebly.com/uploads/1/3/4/8/134893210/8205090.pdfIn PDF document text
    • https://pobivizitonep.weebly.com/uploads/1/3/2/8/132815986/d26f1186e3a.pdfIn PDF document text
    • http://docita.fun/magix_music_maker_17_premium_serial_numberqhr3s.pdfIn PDF document text
    • https://gafetugifepes.weebly.com/uploads/1/3/2/7/132740982/0d6dd05f1.pdfIn PDF document text
    • https://xikofekukinakij.weebly.com/uploads/1/3/2/6/132681309/33163de9206a1.pdfIn PDF document text
    • http://allwoman.site/bl3_anointed_weapons_guideywph4.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/sukedil/article_writing_format_pt3.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/47052306169.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/25118785939.pdfIn PDF document text
    • http://wupeguliv.epizy.com/chaquetas_formales_para_mujer_bogota.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/16521171416.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/vshare_market_for_ipad.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_off0000ce36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE36 5272 bytes
SHA-256: a19b3c58a0abb67575c7035dec789a18a7b21b4cd62dff12a01e362797beec93
font_01_sfnt_off0000dffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFC 10264 bytes
SHA-256: fb781f8169bd678c096cf1f8d236c9a141815d3c6bba1f2570c9cda56b41620f
font_02_sfnt_off00010318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10318 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3