Malicious PDF — malware analysis report

Static analysis result for SHA-256 65ceaf6b2bf44e82…

MALICIOUS

PDF

70.0 KB Created: 2021-02-23 13:00:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f966e1eb4790754a3da96afea5095cd3 SHA-1: 14e9a95c96ae94ef0ddff8a8b0bf496fd0b275e4 SHA-256: 65ceaf6b2bf44e82d7cce11110ef30f162fdf7e16b5dad54c822a99c17fc405b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=lil+menace+forever+mine PDF link annotation
    • https://salofapaj.weebly.com/uploads/1/3/4/3/134314320/rakepu-memarozovibo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372987/normal_601f2d59e556e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497369/normal_601dc3b30f117.pdfIn PDF document text
    • https://moninedowilex.weebly.com/uploads/1/3/1/4/131436981/gixorepezulusota.pdfIn PDF document text
    • https://cdn.sqhk.co/tamoravuwera/bv0jaih/stack_colors_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/kekagate/iHSc7SQ/75550948885.pdfIn PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/bijizizonotujuzati.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493550/normal_601f52c42d38e.pdfIn PDF document text
    • https://wobipogipexiwom.weebly.com/uploads/1/3/1/0/131070125/kexazorejanakuzoxoti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373997/normal_601d36741b57c.pdfIn PDF document text
    • http://meine-gebuhrenfrei.com/the_hobbit_ebook_free_download6titv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460950/normal_5fd88c0ba279c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385012/normal_5ff527dc1fea6.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/Ejhcgeh/2_player_split_screen_pc_games.pdfIn PDF document text
    • https://lutomired.weebly.com/uploads/1/3/5/3/135316507/1959040.pdfIn PDF document text
    • http://helpverifedbadges.com/70021893019vyaw7.pdfIn PDF document text
    • http://maturibcgj.space/76656060997rwp6i.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d97e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD97E 4848 bytes
SHA-256: a0207e4990e58c2cbebaa2e045c0632f289ab696f99259038395b46a3efb6953
font_01_sfnt_off0000e9ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9EE 9696 bytes
SHA-256: c1a25c6806f597f1f5038035585965fcedc3cd1822d2054c0e6a42e903000682

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