Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec9dcb834473a4e…

MALICIOUS

PDF

72.6 KB Created: 2021-03-01 07:50:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 18321d44d5df0b5550e8f54e5dbc3836 SHA-1: b4f2299abf3abae56d9b201d4686cbf6c33d1b80 SHA-256: eec9dcb834473a4eafc7bcf88c35243396e99d680d23470b6601554c13026bb3
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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://vilenefex.ru/award?keyword=soccer+skills+training+at+home PDF link annotation
    • https://cdn.sqhk.co/rufigukuj/3s55vjf/98650268272.pdfIn PDF document text
    • https://cdn.sqhk.co/ravuviwidi/bcfTf9N/lemon_blueberry_bundt_cake_recipe_using_cake_mix.pdfIn PDF document text
    • https://tujozidu.weebly.com/uploads/1/3/4/6/134694944/2e3b07da.pdfIn PDF document text
    • http://shtangye.xyz/copy_editing_practice_worksheets_with_answersjic6q.pdfIn PDF document text
    • http://usesoda.pro/majatosaxokuweno2l3gx.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/6hfgyIu/shark_wallpaper_border.pdfIn PDF document text
    • https://cdn.sqhk.co/rekubapapup/hEbQdWw/first_time_pregnancy_blogs_uk.pdfIn PDF document text
    • http://fly-drive.online/53206000003eb5w3.pdfIn PDF document text
    • http://de-bewertung-889562.icu/megiwuwepif9i0.pdfIn PDF document text
    • https://womovenurobo.weebly.com/uploads/1/3/1/8/131872055/rimoduwiv.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/ijn3haz/robom.pdfIn PDF document text
    • http://bettermoneytips.com/splendor_meaning_in_malayalamyhor8.pdfIn PDF document text
    • https://cdn.sqhk.co/pasojixaju/GLFvjdq/the_last_of_us_remastered_ps4_wallpaper.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_off0000e0ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EC 5380 bytes
SHA-256: c09d73230a8c5ce708a92203e2684fe08adbada93621f04c2deb7aef7ee8cd38
font_01_sfnt_off0000f30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF30E 10192 bytes
SHA-256: efc552620449bbcc47cc5bbdb05492b72b034d38480c3f16daecd63c055ffbfe