Malicious PDF — malware analysis report

Static analysis result for SHA-256 6acb169d6dae3864…

MALICIOUS

PDF

44.9 KB Created: 2020-10-03 07:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0368652260f882113dd6aca5248d38a5 SHA-1: 36d17d10c788773e4b643faaf09aa3a7cc7ef769 SHA-256: 6acb169d6dae386477e34ab8246b5a22761ef24c9c9121699552af5177549f42
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://gettraff.ru/strik?keyword=eagle+eye+iv+camera+datasheet In PDF document text
    • http://files.30upahead.com/uploads/1/3/1/3/131398498/gazuwizodidu.pdfIn PDF document text
    • https://site-1042017.mozfiles.com/files/1042017/sixutipopezozexezud.pdfIn PDF document text
    • https://site-1039324.mozfiles.com/files/1039324/kuwizodikurigojiruxogaju.pdfIn PDF document text
    • https://site-1039002.mozfiles.com/files/1039002/tepuwibokunadajunu.pdfIn PDF document text
    • https://site-1037253.mozfiles.com/files/1037253/88078220829.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4420/8789/files/4930991568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6033/3217/files/viper_vapor_vancouver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4309/0332/files/53853347048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8099/1129/files/suzubax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7688/8992/files/26730021633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2490/0515/files/dietas_del_doctor_bolio.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6125 5044 bytes
SHA-256: 6caa998dc0ef87bb9abb439bae589601648cc26c9c3d231e2b234385c8e7b1bb
font_01_sfnt_off00007253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7253 11396 bytes
SHA-256: 33851a4dac83d6344980aefc9866953d9863f4e14d4f64c1085adfe6e6c176f0
font_02_sfnt_off000098de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98DE 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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