Malicious PDF — malware analysis report

Static analysis result for SHA-256 e242b6f503796eda…

MALICIOUS

PDF

71.4 KB Created: 2021-02-02 18:56:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: b074be1e62b6dcab0767c078255cbc03 SHA-1: a242781d981fdc4764a07027dc4316d73fe63bf4 SHA-256: e242b6f503796eda382b3f8fc87c438b35d231f8d641f00a97efd0d6154e46a2
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/aws?utm_term=minecraft+rl+craft+crafting+guide PDF link annotation
    • https://buvapubadoloj.weebly.com/uploads/1/3/4/2/134265521/8f37dd3885e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419412/normal_600ed11665784.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403119/normal_5ffed346c143a.pdfIn PDF document text
    • https://tagopudul.weebly.com/uploads/1/3/5/3/135392217/ff3db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370541/normal_5fe132a343525.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387929/normal_60168168966bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367642/normal_5fe556b00b269.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401545/normal_5fd279738fa2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368747/normal_5fd38e4287b6f.pdfIn PDF document text
    • https://cdn.sqhk.co/zojudaje/CN8uKgg/sorugoxaladipupifivox.pdfIn PDF document text
    • https://cdn.sqhk.co/motuwezelu/zjWjgI3/motovlog_brasil_hack_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/lutidofele/njaOih6/1699676526.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/wisuw/example_of_formal_letter_to_a_friend.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/98125614483.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/tivanuderubelej.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_off0000dcae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAE 5016 bytes
SHA-256: c8c790a019fc0214a08bb320116fd6654ac235976c0d648e85452d50cf6b20d7
font_01_sfnt_off0000edd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD9 10260 bytes
SHA-256: e5928f730ab0f4d9908d1a8c5bf6c51d4e51e8a2b7605dfc1db7d719f0656cb6