Malicious PDF — malware analysis report

Static analysis result for SHA-256 1841963de2ed5168…

MALICIOUS

PDF

47.6 KB Created: 2020-09-01 00:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a6e7cba962ef66881678f6b56626838 SHA-1: 1fd57c29d560db2b61a1a6f6b096c3dc19e04f3b SHA-256: 1841963de2ed5168bf14e7189aac6fbbe73a08aac322884837e2c598a6d8dd6a
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to an SEO redirector infrastructure. The primary redirector URL, 'https://ttraff.ru/pify?keyword=cuneiform+alphabet+chart', is flagged as malicious and likely serves as a lure for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=cuneiform+alphabet+chart In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_e6b09d0ef47d445bb7a58f12c76a5975.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e6092c_3415ad25ab7d42afb25c833dc927d159.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/58a813_a637631fbb864783bae697d99ff84699.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/12daa7_ba17ab495c824392b1f7b505dd9a4a73.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/reea_feat_akcent_rain_song_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8086/7235/files/54742315422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3572/1628/files/young_thug_jeffery_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4559/9904/files/ackermann_function_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1565/0980/files/50328070101.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9374a7_d3ca3e9043cf4197b78a5b667ae123ff.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d1c05f_a62d43a59fb54265a2e9b1d9d033c541.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/97493d_e7c6e56e71b544bfb1c86d72a1526d72.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e7e4a0_eb1903b8ac1e4c529e230177725aba7f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d17951_e3988ef7bfd445178ca8458790b5fcf8.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 6

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_off00006650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6650 5124 bytes
SHA-256: 84f5f514a0c659e91dd58e471398e052a95a7257cb16ce7cfa523b757e1176a7
font_01_sfnt_off00007788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7788 10548 bytes
SHA-256: 4152ef822ae773c9237b9f96dc23faa30cf6dd70ce8d7a5f0acd4b2def6b49f9
font_02_sfnt_off00009bbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BBF 16224 bytes
SHA-256: c4441e48b2f68604838bd51e3092d1355fc6ad73caca962ec91191dcf11ac5c9

Open this report in the interactive analyzer, or submit your own file for analysis.