Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e241abae8cfecc9…

MALICIOUS

PDF

48.1 KB Created: 2020-08-28 05:45:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8f0c7241d3d59ad95c6748954ea37df SHA-1: a52fcf2f20a852f9f38a957f5ea8928c1e735104 SHA-256: 0e241abae8cfecc9d746634413ce4b16bca3774baac288c16dabdb977b242131
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many of which point to a redirector service known for hosting malicious content. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, indicating a lure for users to download content. The ML classifier strongly suggests maliciousness.

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.cc/pify?keyword=quasi+linear+utility+functions In PDF document text
    • http://files.temposhop.co.uk/uploads/1/3/0/9/130969699/6a9f71509af0.pdfIn PDF document text
    • http://files.cheersatthepier.com/uploads/1/3/2/7/132710797/2560115.pdfIn PDF document text
    • http://files.mmjhorchestra.org/uploads/1/3/2/6/132681390/mefutolawalejorareg.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/1/0428/9835/8432/files/44411244229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0568/1557/files/87432682366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0799/1195/files/95298545721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6529/5526/files/mulupidoniv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5653/7495/files/jufalezutodenotukewifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4416/6049/files/30141946020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9017/3349/files/lewebuwoguxezojanifivabez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/13440502155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tokon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/79976972724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7362/6524/files/dumunulup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2255/7095/files/3119140756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/basovixot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6240/1947/files/araketu_minha_razo_de_viver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4787/0876/files/73838084760.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_off00005edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDF 5036 bytes
SHA-256: 4c6caf073882f962df6328a60f0f7a930c2bbc8a8847e8719964294d0e2c61e9
font_01_sfnt_off00007012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7012 13892 bytes
SHA-256: 53967476cf0433e20e55ed2604ac44cef908d70de4b385f1515425e406e7a85e
font_02_sfnt_off00009cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB5 16548 bytes
SHA-256: 32a9fe959a89cb0d28ca0e30da48367e12e0b1d21bcf8dc3c912a1f3c38e7ffd