Malicious PDF — malware analysis report

Static analysis result for SHA-256 21de918ba6c694f2…

MALICIOUS

PDF

42.9 KB Created: 2020-08-23 02:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c0f6f82e4c2d59d3b2f61ac3da8f992 SHA-1: f51c1c3c85d046fe0ccb06ea022a1290d78ac636 SHA-256: 21de918ba6c694f2bf76a698ca9e33eafe19c907e5950a5efd3bf3c802a12bfc
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination. The document also includes a large number of links to other PDFs hosted on Shopify, potentially for SEO manipulation or to appear legitimate. The presence of a visible LOLBin command execution instruction suggests the PDF is designed to execute commands or download further payloads, though no specific script was extracted to confirm this.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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.com/pify?keyword=action+movies++website In PDF document text
    • http://magiwades.gaiabamman.com/uploads/1/3/1/6/131636644/gesipid.pdfIn PDF document text
    • http://bofuso.derrickalstonphotography.com/uploads/1/3/0/7/130739430/4f71b2b790f38.pdfIn PDF document text
    • http://files.murdermysteriesiom.com/uploads/1/3/1/4/131438509/baxavodadujajobivi.pdfIn PDF document text
    • http://files.cooriecurls.com/uploads/1/3/2/3/132303035/susepotetupixe_pumof_fudezotisixi.pdfIn PDF document text
    • http://jemul.nautiluscases.com/uploads/1/3/1/4/131406717/9094821.pdfIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/missile_war_minecraft_server.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2239/3244/files/saxamelapotivevolekorelep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3755/6889/files/gaxosigapobawewebiruxiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2664/4125/files/94908428677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/71074247741.pdfIn macro / runtime command snippet
    • https://cdn.shopify.com/s/files/1/0434/4188/1254/files/rudumuwimupezigelum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6107/6375/files/jenaralorawigebavajeselu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6767/0689/files/bent_over_row_workout_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/rivusijalelemuxogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/morphology_of_flowering_plants_class_11_ncert_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3490/1671/files/best_minecraft_faction_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1442/9608/files/213037175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5726/7359/files/business_accounting_and_finance_catherine_gowthorpe_download.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
🗂 Part of campaign: cooriecurls.com 4 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B23 4888 bytes
SHA-256: 10d776aacaa196b7364e43c95642524d823a76ea2265a7603159dd04f9e5cb0b
font_01_sfnt_off00007bc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC6 10204 bytes
SHA-256: 141b1201abb02eee2f319b054be407eb1cb9b88f1f808cdf71e08af89608506f