Malicious PDF — malware analysis report

Static analysis result for SHA-256 76da954e09e233f7…

MALICIOUS

PDF

38.3 KB Created: 2020-08-12 23:44:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a306dcea4e71a1d4606ed47eeafe798 SHA-1: 676bcc9d2ae51057b0a3b95ccc751d0d8722c5d1 SHA-256: 76da954e09e233f7568b05ec1f68c1c0e275fa5cfa08f077b1ae4d419ce11c46
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating that one of these links points to known malicious redirector infrastructure. The document body and embedded links suggest a lure for users to download PDFs, likely as a pretext for phishing or distributing further malware. The ML classifier also strongly flagged this PDF as malicious.

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.com/wb?keyword=libiamo%20ne%20lieti%20calici%20pdf In PDF document text
    • http://files.centertowndfw.com/uploads/1/3/1/3/131383480/rakakogaxogopegigip.pdfIn PDF document text
    • http://files.britishbanterinatlanta.com/uploads/1/3/0/8/130813373/rukepimalag.pdfIn PDF document text
    • http://files.tankenterprises.ca/uploads/1/3/0/7/130775380/pomevabanaze_noxiganuwaza.pdfIn PDF document text
    • http://zebos.patrickwboyerjr.com/uploads/1/3/0/8/130874222/sadenuvuzexedepamas.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/1/0432/1817/4107/files/vapira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0074/2567/files/94338204275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3142/7234/files/43304538412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2402/3715/files/cafe_creme_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/bratstvo_crnog_bodea_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0709/0581/files/32973971286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8042/4351/files/wuxoxamuxetaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1683/8558/files/kumaluxilav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8547/0623/files/bronx_zip_code_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0608/9640/files/regal_cinema_mccain.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/96196390733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/adrenal_gland_function.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000550e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x550E 5108 bytes
SHA-256: 32692a502b1a8ee72f463ba960032f4ce7f93545bd9e3a32468b56ecc1402b65
font_01_sfnt_off0000665e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665E 10772 bytes
SHA-256: e500dd1940e4a6ab842cf304dd522a379dfe7e040c02e0051b1e00f6200113d5

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