Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9eeb854a1b42729…

MALICIOUS

PDF

72.5 KB Created: 2021-02-22 10:29:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5766789d75827ac81c45e6b194d74f54 SHA-1: 8ada7e75eb4bf484fdcbec27164b90e6bfe81392 SHA-256: d9eeb854a1b42729618be157fc1a450144f37e27bbf8c9dc982dfff1818e982e
254 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
  • 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.
  • 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.
  • 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://yafferge.ru/wix?keyword=how+to+hack+drive+ahead+sports+ios In PDF document text
    • https://cdn.sqhk.co/bidekidarub/gjgjaig/12840135880.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495855/normal_60045f3818b58.pdfIn PDF document text
    • https://gebusoju.weebly.com/uploads/1/3/0/9/130969184/f9ffe5.pdfIn PDF document text
    • https://nusutaligufobam.weebly.com/uploads/1/3/5/3/135393176/sexivujuvus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478402/normal_600a5d6869cba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492286/normal_6025c62eb9ff6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446773/normal_5fd945eed2a3a.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutazomaga/igichcJ/mega_win_slots.pdfIn PDF document text
    • https://mugokirupela.weebly.com/uploads/1/3/2/6/132681863/8964850.pdfIn PDF document text
    • https://zibinileder.weebly.com/uploads/1/3/4/7/134748255/4ea4b234.pdfIn PDF document text
    • https://fipugodegiposal.weebly.com/uploads/1/3/4/6/134687615/510495fa626abf5.pdfIn PDF document text
    • https://fupopafesuz.weebly.com/uploads/1/3/4/4/134443157/gizerutox-zaledewemowade.pdfIn PDF document text
    • https://vuvonuzomuvi.weebly.com/uploads/1/3/4/5/134508102/pepetel.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/tixedujegibex/vipemunojiwobun.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/c_g_jung_red_book.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/dolosezuzigunumunazefa.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/movufataguzumi.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/namilevudolazabupuwuxarem.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/aprilia_rs_250_performance_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/47655077425.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_off0000debe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBE 5308 bytes
SHA-256: 5c7d8ba4bcd0eb1b64e60692db2f422c1656194aa79fb397e923b7dec8b440bf
font_01_sfnt_off0000f0dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DC 10460 bytes
SHA-256: 7f22bb3f758c30761309f9b85c9fa5fe7fe18a0b2c0cc25f8d16d428b016c64f