Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc69890b5bd5f1f…

MALICIOUS

PDF

56.9 KB Created: 2020-09-18 09:21:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-30
MD5: 7a370db166a4bdecc4bf9833aee874c6 SHA-1: 0d5dd77fa127ebd37b98cc9472d2ed8dbf540f9f SHA-256: 1dc69890b5bd5f1f1935664b00243c34cc70bd4cfcfad9fc2a4ca56d22a394ce
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/wix?keyword=nuvision+10.1+tablet+manual In PDF document text
    • http://biruku.ourmommieshands.org/uploads/1/3/0/7/130775200/bumigutomuboluxol.pdfIn PDF document text
    • http://files.superiorcouplingssealants.com/uploads/1/3/0/7/130739662/wutosazeresika-fowokotibudimem-mafepajur-munikiz.pdfIn PDF document text
    • http://files.avianaonline.com/uploads/1/3/0/7/130740524/mixabepopo.pdfIn PDF document text
    • http://fizibade.salemfurniturerepair.com/uploads/1/3/1/4/131407995/badumukovere-gonitofivun-gawubiguroje.pdfIn PDF document text
    • http://files.northstarsxc.com/uploads/1/3/1/4/131407737/9950286.pdfIn PDF document text
    • http://wofije.ancientwavestudios.com/uploads/1/3/1/8/131857120/f7beaf128.pdfIn PDF document text
    • http://files.markjacobsauthor.com/uploads/1/3/0/7/130776089/xoboremanufux_nowinojuwunote_kipabitolijosem.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/1/0481/3927/2345/files/word_brain_answers_penguin_14.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/rodipaguz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/mcafee_antivirus_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5045/0600/files/26946842155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/6306/7032/files/99184885872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3308/3294/files/current_group_in_rtf_template.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_off0000a186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA186 5128 bytes
SHA-256: 87a6a7dc8a0c474d6e6de257442bb6c3e5e7085dbe9b59353bac75ddececd42a
font_01_sfnt_off0000b301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB301 10476 bytes
SHA-256: 2c4b96dd0d92dcf77fbd411a8dad9eb1c5f2c6a84529cb0a471b87a67bea3a56