Malicious PDF — malware analysis report

Static analysis result for SHA-256 27d183432bfdf246…

MALICIOUS

PDF

58.5 KB Created: 2020-08-21 23:55:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 430019be5860bea3a559bd415126fda7 SHA-1: 411aea8b1bd020f2f099625f057645d3557ebc72 SHA-256: 27d183432bfdf24673c8136e65f8a4994dcda2aaf29b58ddbcd5d7e023a80afd
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a malicious redirector link. The primary malicious URL identified is https://ttraff.ru/pify?keyword=video+bts+idol+dance+practice+mirrored, which is likely used to obscure the final destination of the attack. The document body itself is heavily obfuscated and contains numerous other links, many hosted on Shopify, which are likely part of a link farm to improve search engine ranking for malicious content. The overall pattern suggests a phishing or scam attempt leveraging a link farm and redirector.

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=video+bts+idol+dance+practice+mirrored In PDF document text
    • http://files.jryderpsychnp.com/uploads/1/3/2/6/132681579/2914167.pdfIn PDF document text
    • http://files.dogamelbourne.com/uploads/1/3/1/4/131437394/bfe8920.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/1/0435/9513/7187/files/ehome_infrared_reciever.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6617/9230/files/nomefele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/zuluvab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6172/2788/files/2436872507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8932/1366/files/44816184408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8440/7199/files/real_audiencia_de_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6957/1233/files/rozarofizujebof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/kekejitafojijisane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0460/4066/files/california_association_of_realtors_rental_agreement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/69633046218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2011/4325/files/56914507118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3087/9125/files/sql_developer_resume.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B66 6476 bytes
SHA-256: 51ab6905290750564d90708e7631dedb146f5386d6918388d3b3373a2b20f6d9
font_01_sfnt_off00006b3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3B 7528 bytes
SHA-256: ae7ab6467557bca39920c774c9bde997e4bb3bfec86f3e8aef922a464a6c8511
font_02_sfnt_off000083bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83BB 5324 bytes
SHA-256: ceff5336e5800ff3b2f42a4e90aefc491ec4cd27d93774c514bb5e0d8fcde07a
font_03_sfnt_off000095b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95B3 13912 bytes
SHA-256: fc36ac049a5941c184910b7ba74eafd5c40e974cda286b8fc6cadb6fb1751cb8
font_04_sfnt_off0000c242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC242 16860 bytes
SHA-256: a6a6479f5d9089d5da6a93b1492593ee14966874d602a05f573301f2d6c4b334