Malicious PDF — malware analysis report

Static analysis result for SHA-256 750e48354203fecc…

MALICIOUS

PDF

44.2 KB Created: 2020-10-31 03:25:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ce2ccd0f442dd17e09e6c40843bfb6f9 SHA-1: 8f659a9ea075200714694e83f0ef2ed35ec57e05 SHA-256: 750e48354203fecce37dfb2792e5e41dbb80a0359fcda8a2a951939a30d514e9
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.link/123?keyword=phil+collins+but+seriously In PDF document text
    • https://delimilakemasuj.weebly.com/uploads/1/3/4/4/134400920/seteva.pdfIn PDF document text
    • https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/fanopalasevenamuti.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdfIn PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/gigovofen.pdfIn PDF document text
    • https://vavagufone.weebly.com/uploads/1/3/4/3/134345741/fegofomi-duzofopofopab-mekujogiwaw.pdfIn PDF document text
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/tupigidu.pdfIn PDF document text
    • https://gewosawoma.weebly.com/uploads/1/3/0/7/130739201/718660ea80b.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000062a3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000062a3.bin)
    • https://cdn.shopify.com/s/files/1/0428/5104/1447/files/54224614521.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/91099031753.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/tubobuwokopezitonedovur.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/mijof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7399/8500/files/kezifisoxivufitixageb.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/63794293869.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/sling_tv_apk_for_android_box.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 extracted file (font_00_sfnt_off000062a3.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A3 4920 bytes
SHA-256: dcb7c870083eaa49cd7463112a0f77e3a561e9947587689c362ed18fd4ac39e5
font_01_sfnt_off00007363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7363 15612 bytes
SHA-256: 923348937fc417d3898c800cb341a1ef9a849945b7bcfb52018cb649539e9030