Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ffb22860b62c571…

MALICIOUS

PDF

43.3 KB Created: 2020-08-08 03:33:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 249ad3344b6adf94959b872ec7eb4ff6 SHA-1: 26fcbae128a17b15cbe8af1c2a7dabf9fe12df83 SHA-256: 5ffb22860b62c57129c3cc9d8236d22356e4e3365399aed906fef658c6a841cd
234 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to redirector services like ttraff.ru, designed to obscure the final malicious destination. The document body and heuristics indicate a lure related to 'mobile games addiction research paper pdf', likely a phishing or scam attempt to drive traffic to malicious sites. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to exploit user curiosity for malicious redirection.

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.
  • 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.
  • 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.
  • 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=mobile+games+addiction+research+paper+pdf In PDF document text
    • http://files.elkhollowgetaway.com/uploads/1/3/1/3/131380754/pobibifalalebaneb.pdfIn PDF document text
    • http://files.bobbiluphotography.com/uploads/1/3/0/7/130738852/gadosedafod.pdfIn macro / runtime command snippet
    • http://dufaj.ccmomc.org/uploads/1/3/1/3/131379732/tenanokutet-jukumid-gimapive-fimataregixef.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/1/0431/5430/9284/files/social_history_of_england_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3710/9917/files/concepto_biodegradable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0565/4678/files/35836445093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dekafarisajanitid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2275/9582/files/fallout_new_vegas_project_nevada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1945/3095/files/62807594431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8850/1143/files/palinuxajiresofuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/centroid_and_centre_of_gravity_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8765/8141/files/cells_at_work_manga_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/lekizebiwo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A11 5716 bytes
SHA-256: b72de281880f365b1230cd27ad2c2599a173cedf7ff87d8d0532ed264ade9d77
font_01_sfnt_off00007d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D67 10360 bytes
SHA-256: 7301bcd9dba576939518d78e975aecf77e56705196c53d9cf6272911f3665361