Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dbe54b645a9ea91…

MALICIOUS

PDF

71.8 KB Created: 2021-02-28 01:25:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 25fd2dced98a423fb1f8e07473d1b7c5 SHA-1: f7ca71dc8aeebb5a4efcf7c47d0d6f0374040e94 SHA-256: 2dbe54b645a9ea9150efdbb56342fe3e7b35a46f544bf04e6166232ecc644fc5
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://resalured.ru/award?keyword=does+god+forgive+everyone PDF link annotation
    • https://cdn.sqhk.co/pirasemofoge/id9KHhb/xpress_recharge_smile.pdfIn PDF document text
    • https://cdn.sqhk.co/feripamapuv/TVx2tjf/zenasu.pdfIn PDF document text
    • https://zulezinema.weebly.com/uploads/1/3/0/7/130776370/a303c35eb9ec3c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495974/normal_5fe419398b142.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501057/normal_5fe1469030722.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/qjixoja/22769166880.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/Nkjcjf1/yorme_the_duterte_fight_song.pdfIn PDF document text
    • https://cdn.sqhk.co/kugorazig/DjfkihH/72509480492.pdfIn PDF document text
    • https://cdn.sqhk.co/fujikapoji/FjgYhhH/5748606340.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/baxibegigokexanenaz.pdfIn PDF document text
    • https://cdn.sqhk.co/resesexiraf/aibKhgY/96148903699.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411231/normal_5fd651dd171eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502906/normal_602ecc633884c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382430/normal_5fda68f65de12.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/tejuvonixag/44039358874.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/1258886326.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/10593315057.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_off0000dda4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA4 4992 bytes
SHA-256: 657b1b1aa6ea99236c7b182e33f3949e8255f53acb655bee115a9ae5365d2dd7
font_01_sfnt_off0000eecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEECC 10380 bytes
SHA-256: 2c12459f69af732a4811965f99f363ee538c65c418030ab4af1b3257bc006cb2

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