Malicious PDF — malware analysis report

Static analysis result for SHA-256 d468948119649737…

MALICIOUS

PDF

42.9 KB Created: 2020-10-09 04:46:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 69ddb05a79f20b94b1c134fed8772f79 SHA-1: 85ee080ff1a8ce348b55778b7a6783fdd2e4472f SHA-256: d46894811964973795d90499082a6d1b28f00277a9611252cb3d8d575363b147
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://ggtraff.ru/strik?keyword=amd+driver+update+for+smbus In PDF document text
    • http://files.dry4u.com/uploads/1/3/0/7/130775633/raluriduded_zevut.pdfIn PDF document text
    • http://kitejas.glitteratibath.com/uploads/1/3/1/3/131398097/ef5a731912580c3.pdfIn PDF document text
    • http://files.hoithanhemddtkpdtttn.org/uploads/1/3/1/4/131407796/52d434158.pdfIn PDF document text
    • http://mizopagez.beardedbomb.com/uploads/1/3/1/0/131070894/tikavoliz.pdfIn PDF document text
    • http://kaber.titanwrestlinginstitute.com/uploads/1/3/1/4/131455069/890ea437d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1775/0693/files/72362726504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/leland_snow_play_coupons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9440/0423/files/bupeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5793/3219/files/wafemovoludek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6231/2611/files/81912920749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0426/3585/files/louie_giglio_indescribable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7299/5996/files/zamumek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8004/7010/files/bill_cosby_fun_game_music.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_off00006983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6983 5344 bytes
SHA-256: 063d8c112a96cf90279ca49db5f4301b1bccb02e96b4c0e3cd56cb58fa5f1f73
font_01_sfnt_off00007b9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9C 10184 bytes
SHA-256: ec0575c937ebc6fd72279755e666a3cf8b6472ff18ee976ca7fafee4e308bfa8