Malicious PDF — malware analysis report

Static analysis result for SHA-256 15df0c693ff7d9b8…

MALICIOUS

PDF

44.0 KB Created: 2020-08-17 18:08:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dd313de8877fcdd8a28342ad24e0180c SHA-1: c58c70b04bf67dbb010ae055cdf321d545fa3da5 SHA-256: 15df0c693ff7d9b8c402866d75cbc95fcb33dd287e5f6bf59c8d5aa337f6fbb5
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=action++full+version+cracked'. This link is presented within the document body, disguised as a cracked software download. The PDF also contains a large number of external links, many of which are hosted on Shopify, suggesting a link farm or SEO manipulation tactic to distribute 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=action++full+version+cracked In PDF document text
    • http://suvijup.southbaymusicschool.info/uploads/1/3/1/4/131452846/71290afe.pdfIn PDF document text
    • http://files.blackbullfrosterley.com/uploads/1/3/1/4/131482823/1ac2e16344.pdfIn PDF document text
    • http://files.streamskinz.com/uploads/1/3/1/3/131398428/julupujenopo-jewidokosimadi.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/1/0435/8720/7327/files/rabipemowijito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/fukinujobawekutom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2522/5112/files/gunufute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0407/5933/files/27154353131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1137/4234/files/kinovavotugopub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2151/6448/files/wuzudikolovasav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5358/8390/files/50321174169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6954/6396/files/19207308201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44219577828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7027/4201/files/78683993878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fatexuxutul.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 5

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_off00006a70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A70 5128 bytes
SHA-256: f6510f65bf71f7ba3cfc5fba64dc4ba76a5e54c1c1676e28d0f7c69a4ca54cb2
font_01_sfnt_off00007bef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BEF 12184 bytes
SHA-256: a7fa12d2f382418ed2b4516dd8f2f98035362d6eb4f064b8cbe1a69b5122678f

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