Malicious PDF — malware analysis report

Static analysis result for SHA-256 98b7183a05720ae5…

MALICIOUS

PDF

46.5 KB Created: 2020-08-17 03:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 973e9a2d8b8aa796270e25ed8b5acf40 SHA-1: e3a2aebf6f8ae694d3200da4c2d41f6bbf1a6ec4 SHA-256: 98b7183a05720ae5389a2782b6630593e8d0a2149da8541fcaf1049fc0521e6e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to an 'N64 emulator ios no jailbreak' lure, suggesting a social engineering tactic. The PDF_SEO_LINK_FARM heuristic indicates the PDF is part of a link farm, likely to improve search engine ranking for malicious content. 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/pify?keyword=n64+emulator+ios++no+jailbreak In PDF document text
    • http://files.metalmeltdown.com/uploads/1/3/1/4/131453276/joviloxaw.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/1/0429/8909/3018/files/fudifumesura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2341/6987/files/dujeduxabalobiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3979/files/76305638514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3278/8648/files/lasewalurotakiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/mosuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/36715905006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/jquery_template_html.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/anagram_words_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6318/0454/files/94702957988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/2005_ford_explorer_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3050/3846/files/engineering_drawing_standards_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/wod_vampire_the_masquerade.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000589c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x589C 5324 bytes
SHA-256: f39582a30d1255a4e42e2b99bcfc690c5775b49a14e9b85a567215645eb52b71
font_01_sfnt_off00006aa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA0 1772 bytes
SHA-256: 1dee64feb338e2cc595d88a35b766ea8b8b199e124349708576bb4cf11bee47e
font_02_sfnt_off00007353.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7353 10712 bytes
SHA-256: 656fdcff2df5afee80043b125fbafca828896a190c31f987cb6c8ce7a6aa644c
font_03_sfnt_off00009826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9826 16036 bytes
SHA-256: 354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb

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