Malicious PDF — malware analysis report

Static analysis result for SHA-256 5044d08edd67938c…

MALICIOUS

PDF

70.9 KB Created: 2021-02-20 09:42:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d956ff3f55f8ec16a13546f516d1d569 SHA-1: 07e68fb087dcd78a4f75bae6487448e3f362f1f5 SHA-256: 5044d08edd67938caac1625282f9172c2fc0fa29b425311fa7244a63b9d84f5d
196 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
  • 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.
  • 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://leonvi.ru/wix?keyword=plan+de+trabajo+para+grupo+de+mujeres+cristianas PDF link annotation
    • http://netewe5.xyz/wekatuda7g5l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448110/normal_60060e8b84cf9.pdfIn PDF document text
    • https://pubotaxo.weebly.com/uploads/1/3/5/9/135962756/buganoti_setavo_wudigesuxiguza.pdfIn PDF document text
    • http://wownatural.fun/new_apple_mix_ringtone_download9gkh6.pdfIn PDF document text
    • https://wipukanutunuk.weebly.com/uploads/1/3/1/4/131437017/17a2fd.pdfIn PDF document text
    • http://health-top.ru/bedopoxekokifexopimawrwa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374207/normal_60150048a9186.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381730/normal_5fd943dc44e94.pdfIn PDF document text
    • https://rakiletapaleta.weebly.com/uploads/1/3/1/8/131856645/7965448.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/vonuxagupeduze/radio_button_group_onclick_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/anatomy_books_for_artists_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/whirlpool_front_loading_washing_machine_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/marketing_agency_growth_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/guzewurodo.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/net_core_email_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/95201429986.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_off0000d39e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD39E 5608 bytes
SHA-256: 1169febf5b8a7915b70c957fc0095d9ca7c01e36c377dd30306f8370b472c636
font_01_sfnt_off0000e69c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69C 11832 bytes
SHA-256: 27b3b10383d9d9c782c41b88630f4b8d9c548b6eda5386fc09a05f12c3371ca8