Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f57da896efa7554…

MALICIOUS

PDF

40.4 KB Created: 2020-08-31 01:47:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c07b5423cfeab1d53f020f3ce2cf0085 SHA-1: bfe15ebac1d8a941c6a9026fc531f49b9cf0316f SHA-256: 9f57da896efa755457d8aca605821e5de5a08b0bd78bbd99a8eba9b05ab33c30
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.club/wix?keyword=e%25C4%259Flenceli+%25C4%25B1sl%25C4%25B1k+fon+m%25C3%25BCzi%25C4%259Fi+indir', is designed to redirect users to malicious content. The document also exhibits characteristics of a PDF link farm, with numerous external links, many pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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.club/wix?keyword=e%25C4%259Flenceli+%25C4%25B1sl%25C4%25B1k+fon+m%25C3%25BCzi%25C4%259Fi+indir In 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/1/0431/1977/1799/files/71800162213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/49386946122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xazome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/wwf_no_mercy_rom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9262/3001/files/mastering_chemistry.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_8effff432bae424d9315c3df81b13c0c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_87e67cb6cc884dda9b20febff742b9d9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_2d4f321424ae4301bfb7d00787c90909.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/37428b_f2be741743fb4927af5153443bec78ee.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3732/5472/files/sistema_bethesda_para_tiroides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/oxford_arabic_to_english_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/zoladegofoluzet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/disipekeze.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2ac701_2936124796e3448d88149de890f29a35.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_24aea0c63e874923a51c64b47926ef78.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/23e9be_d98b837f56814c87abbf9a0e82afbccd.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c836c3_4ad54e98b5d1477fbb77417e10590041.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52E3 5412 bytes
SHA-256: b92af1371c1ec63b9db57e253ed908b63bf9892695ae63c5850538a8cfdb4346
font_01_sfnt_off0000650e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x650E 1888 bytes
SHA-256: 7ef6cb6698fea806eec66effba9ae77859a8e18c03169e66e212b1421c87ab72
font_02_sfnt_off00006e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E21 11588 bytes
SHA-256: 977ba29b9a20a36b7f2cb51c1b5c905a89e7bbe2e85bb43303958cdbd888d736