Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e9bf668627fa43…

MALICIOUS

PDF

50.9 KB Created: 2020-08-19 17:30:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a42229ab6e5c472af36bb12c7f80c4ce SHA-1: 7f24354d727b78f41bf1fb623ab91d67ac30d391 SHA-256: f0e9bf668627fa43b63fa2963fcc8239b4df2810fcfefe60725c963dd95b1ae4
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'bksb maths level 1 diagnostic answers' and includes the malicious URL. This suggests a social engineering attempt to trick users into visiting the redirector, likely leading to further malicious content.

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=bksb+maths+level+1+diagnostic+answers In PDF document text
    • http://files.lilyandjoantheatre.com/uploads/1/3/2/7/132740552/gipuxawoluwepi_bakiremovifupu_gutes.pdfIn PDF document text
    • http://files.sshvug.com/uploads/1/3/1/6/131606256/8febbe.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/1/0427/8360/4903/files/26083960219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/phoenix_az_zip_code_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/90479190423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0124/0992/files/active_listening_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0614/8255/files/captured_by_a_better_vision.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0905/6668/files/46007651251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixunijibofalase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9024/7829/files/74091673595.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7130 5812 bytes
SHA-256: bac3e1e1b5391bb43edf5cb82e68b5af778b15a25adacad9ab32caad4ee874e0
font_01_sfnt_off000084e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E7 10288 bytes
SHA-256: 0bfbba66cd7af6fa2599062790b769047aef2a9ed7f5db976caea7e02a0171f5
font_02_sfnt_off0000a85e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA85E 16544 bytes
SHA-256: 49230a07578f2a0b108554ff1d47b1cb24b8f8081254bad551c0ce72ea05e0a5

Open this report in the interactive analyzer, or submit your own file for analysis.