Malicious PDF — malware analysis report

Static analysis result for SHA-256 176c86b10e6ec24e…

MALICIOUS

PDF

75.8 KB Created: 2020-08-25 01:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5977a333a7e079ba7fb92cfd5e005747 SHA-1: eb4882e1ace1e16bdee09faca05eaa75b5891da1 SHA-256: 176c86b10e6ec24e79dcfcace736420d0d5843aa801482fc3b331919834c2c3c
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to manipulate search engine results or phish users. The embedded URL `https://ttraff.cc/pify?keyword=7th+grade+advanced+math+textbook+answers` is a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious intent, likely related to phishing or malware distribution.

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=7th+grade+advanced+math+textbook+answers In PDF document text
    • http://files.trader-lee.com/uploads/1/3/1/0/131070351/mofupebasemesedula.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/1/0435/4247/9007/files/44242356712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6302/5567/files/95883719931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5306/2043/files/xifukoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6432/6309/files/banadinenokobibadaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7202/8823/files/duganoveveri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1579/7917/files/wopunujib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1914/9216/files/puponaminemimewapisubiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4768/0162/files/goribiduwobasebotiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38746106010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2166/2365/files/adobe_premiere_elements_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6013/2005/files/2574128724.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D1 5728 bytes
SHA-256: fb415f96d0811511c89385590f139ce8a358ac1b10c7afd1e861ab687ea689a1
font_01_sfnt_off0000e63e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE63E 11080 bytes
SHA-256: 27398261f0c4c887176f1b0e98aff9aa53728c6714bd3ed46e7bf88ee7b17715
font_02_sfnt_off00010c19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C19 16344 bytes
SHA-256: f3b95f1269985bafc3dfb9b5b35e76df8a4d57039a143c013aed99c7cf3a4a89

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