Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ed7e70b82669e11…

MALICIOUS

PDF

49.8 KB Created: 2020-08-25 22:26:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 324032f700729e28a4a428aee0422d07 SHA-1: 3dc44f3312f42b57c589935027194ee2b3d70660 SHA-256: 7ed7e70b82669e11254ba865ec07cea141503b37a09a90f02ce4695c263be9ff
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to redirectors and SEO link farms, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of links to known malicious redirectors reinforces this assessment. The document body, though heavily obfuscated, contains URLs that are likely part of the lure.

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.cc/pify?keyword=clang+implicit+instantiation+of+undefined+template In PDF document text
    • http://files.the-beaver-house.com/uploads/1/3/1/4/131454316/2622033563744.pdfIn PDF document text
    • http://files.mocins.com/uploads/1/3/1/0/131070938/guvaw_mevogaraxigiwu.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/1/0437/6104/1569/files/pavud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6086/2882/files/retamukuduse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8758/4675/files/xigeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5376/9126/files/tanoniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1137/5267/files/buxivukaruzaxuseda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/85690193721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2163/7544/files/frozen_2_4k_trailer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/mometomigimalituguterub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5516/9182/files/algorithme_arbre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1909/2647/files/lupizeliloboxutalubib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2127/9137/files/16816910167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9649/0655/files/graphing_quadratic_functions_standard_form_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3086/1208/files/ffxiv_act_download.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_off0000788e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x788E 5284 bytes
SHA-256: 7bc2e598b6f4cc65128653ce8ec9172ce6587a7cbffa0697338ac6dee2f66c2e
font_01_sfnt_off00008a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A73 15188 bytes
SHA-256: 457a54b5c3d7f044ed5d6d9c49a402b52c75d8162d338d93b240bb8e1187089a

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