Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4f42b6ea657dded…

MALICIOUS

PDF

41.5 KB Created: 2020-08-07 08:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7268b64fab2c64855b0771642988b916 SHA-1: 8aa7b0e7af288eb53c8569b1d034e777a4e64031 SHA-256: f4f42b6ea657dded3970c32b5613b9b54dd617ee018f1c8dc0a6824eeb18519f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=abstract+reasoning+test+pdf+for+high+school'. This URL is embedded within the document body, suggesting a social engineering lure to trick users into downloading further malicious content. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to improve SEO for malicious content. The primary malicious IOC is the ttraff.com 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.com/pify?keyword=abstract+reasoning+test+pdf+for+high+school In PDF document text
    • http://files.sehasedona.org/uploads/1/3/1/3/131383754/rutapomotafav.pdfIn PDF document text
    • http://files.mawuviosoutreachprogramme.org/uploads/1/3/2/6/132682745/4876382.pdfIn PDF document text
    • http://files.perfectliarsclub.com/uploads/1/3/1/4/131483266/572195.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/1/0431/5463/6966/files/64367647150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5959/2864/files/john_deere_l120_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5009/9107/files/magisterium_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8771/4721/files/fodoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4704/9623/files/plant_cell_coloring_sheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/bangla_boi_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9531/6896/files/minawububelewalugex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4387/2153/files/17249153299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0393/9749/files/minecraft_mods_minecraft_1._5._2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3825/files/san_bernardino_county_food_handlers_card.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3016/6176/files/39030093465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/70685491418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/mimowedolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4205/4048/files/86675480676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6731/0231/files/sosupujelikuzitorajon.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_off000063c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C8 5544 bytes
SHA-256: 2fc725b6e61ed201fae97d6eb26ea3f3e4ef88ba56308f122aca4598105ea158
font_01_sfnt_off00007698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7698 10008 bytes
SHA-256: f34c316a63515b2757026ac43ff3ad989fa8d164f14d506d689fbbc746d66b7c