Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda5fcd456770d3a…

MALICIOUS

PDF

56.1 KB Created: 2020-08-23 09:44:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 78c50859ec7f49e9031280ce2d8105e2 SHA-1: 772dd8e1384996ec5655bdae3b71e44b8d87c71e SHA-256: dda5fcd456770d3a0b8199cb7f75c87344b67a844fc5e3eace11cd137bff60a9
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm designed to obscure malicious activity. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the primary malicious payload delivery mechanism. The document body contains garbled text but also includes the malicious redirector URL and several Shopify URLs.

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.com/pify?keyword=mats+knutsson+reporter In PDF document text
    • http://files.disorderly-thoughts.com/uploads/1/3/0/8/130874154/xozadodim_gawujeretefavun.pdfIn PDF document text
    • http://files.hawkecreations.com/uploads/1/3/1/3/131379748/6603715.pdfIn PDF document text
    • http://supiwon.the-nature-atelier.com/uploads/1/3/2/6/132682974/takotobabi.pdfIn PDF document text
    • http://duwena.barrosfitness.com/uploads/1/3/1/8/131856124/rodujobu.pdfIn PDF document text
    • http://nixuv.charlottesvillejtt.com/uploads/1/3/2/6/132681337/94c50f7a.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/1/0435/6525/2769/files/ijazat_song_mp4_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tekutuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9001/6424/files/website_design_assignment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/55477908476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5710/9399/files/94512406394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0631/9002/files/kividonojir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0672/1957/files/section_375_box_office_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4655/8106/files/dryer_sheets_mice_car.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/finodoreguxajujakitofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7945/1295/files/49622577688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7868/8408/files/applicant_s_guide_hrto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mutiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/95276488906.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008997.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8997 4848 bytes
SHA-256: 946e3446ec6498370ef35704f1e69a962e7cfd00783a791aac888922bf88a863
font_01_sfnt_off00009a27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A27 10448 bytes
SHA-256: 52a0f90192e219665af4dc722a3d9a1aa6c8f236f26e791a27fa1c199f0dd537
font_02_sfnt_off0000be17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE17 16076 bytes
SHA-256: 9d161d6e34f835aff196e226d852edde4d65b072a4902c32411b177d8c29261e