Malicious PDF — malware analysis report

Static analysis result for SHA-256 55958fdc8374f9a4…

MALICIOUS

PDF

71.5 KB Created: 2021-02-21 08:51:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3466f79d9771d55129d0113cc439a018 SHA-1: a5b3d8700fa74c2b3f61e0145bd5f1507097351a SHA-256: 55958fdc8374f9a4f4cb5e85d9631ddd3f7b5ddf8c394f8e1c8711a17ec3fae1
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=hope+property+management+vancouver PDF link annotation
    • https://tatabano.weebly.com/uploads/1/3/4/8/134850833/0c3a5.pdfIn PDF document text
    • http://edayafar.xyz/android_pie_os_for_pcugpo6.pdfIn PDF document text
    • https://guvatezip.weebly.com/uploads/1/3/0/7/130776756/wexovusezaxep-karutuwemeron-savumesi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444850/normal_60174f466eb9f.pdfIn PDF document text
    • https://merotulup.weebly.com/uploads/1/3/4/0/134000288/sosozizaraparus.pdfIn PDF document text
    • http://xsafak.com/paquet_entrept_laiss_sheintdtxe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446280/normal_5ffdf32c50c32.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489839/normal_5ff7d8bdca054.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419003/normal_6029f536906ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372376/normal_602fd4165d675.pdfIn PDF document text
    • https://cdn.sqhk.co/wovupeni/OtNwigc/6706243947.pdfIn PDF document text
    • https://cdn.sqhk.co/pubamegumox/if6hdYM/50995332823.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/woberiz/19406353787.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/cat_vs_dog_fight_game.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/tezoziwofigenaw.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/50541772382.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_off0000dafa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFA 5168 bytes
SHA-256: b5bba9539c3333dbaf1cca6566ccd7fd94fb6f79650846099ff04f54c7ca98ff
font_01_sfnt_off0000ec89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC89 10820 bytes
SHA-256: f0f96d6a200f8ccde66b3bf089eb342dcb4770052cc4c1bb2c5db2a4d211ed86