Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd26bdf5e3917a62…

MALICIOUS

PDF

129.8 KB Created: 2020-08-01 03:25:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5fbcc7512e142608b6381c943c758b89 SHA-1: 768b890d08224ee865ba5d609d429c495d955f0f SHA-256: fd26bdf5e3917a62aeee06a3c5aa1912168b917c998d9727394d3fd371846f54
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=chinese+id+generator'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL, suggesting a lure to a malicious site. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=chinese+id+generator In PDF document text
    • http://files.ekstasisculture.org/uploads/1/3/2/7/132740515/2f6e26fe42041.pdfIn PDF document text
    • http://files.hairandmakeupbykirsty.co.uk/uploads/1/3/1/3/131398473/kegusosa.pdfIn PDF document text
    • http://files.streetdreamcreations.com/uploads/1/3/1/3/131383533/zaxolobegoz-zisinil-raluzimute-riferusalimizis.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/1/0431/4628/1121/files/mowejiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2336/7335/files/kekozadafozab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5847/0816/files/26219114952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/51960065675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/gujoxaxasenutut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/82287937146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8491/3563/files/nekozomanowuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5398/1594/files/taromali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/pujofozotimijasizek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5996/1237/files/ligezuweludokuvek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lomapatigusobotatijizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60868594071.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
🗂 Part of campaign: ekstasisculture.org 3 samples

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off0001d44b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1D44B 21936 bytes
SHA-256: 7e451b6a2cfee7d2d1f631041cb4a1d043c60bd303ec4db54fb22daa50ea0c94
font_00_sfnt_off0001832c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1832C 4148 bytes
SHA-256: e7e72de0d4bc52d8c54257910160692098114100ae0ec20f8b047783126921ae
font_01_sfnt_off00019209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19209 4960 bytes
SHA-256: 5df576d203bb043e6d7ae18fd30d3a93ea60d9eb30f0bcc73d21df4f92b55f53
font_02_sfnt_off0001a2d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A2D9 15980 bytes
SHA-256: 40013327227e7f7cc088d564e86a58a8c7f15d85df43ece04836f5109f2fabb7