Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bef3076d314e609…

MALICIOUS

PDF

53.3 KB Created: 2020-08-21 16:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c42304334f115a778a8b956ddbfc4c6f SHA-1: 457b92aff3eb1f0d536b10744c1cee32e6ad0a1e SHA-256: 2bef3076d314e609b45d49671b5bdfa92f46d75a7f7bb6cfd3ec0ec3f7bba468
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation. The embedded URL and document body text point to a lure for free PDF downloads, which redirects to the malicious domain 'ttraff.com'. This suggests a phishing or scam attempt to redirect users to potentially harmful 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=actos+de+comercio+libro+pdf In PDF document text
    • http://files.standrewsroswell.com/uploads/1/3/1/4/131406840/nuxaxor_vokiru.pdfIn PDF document text
    • http://files.huntingdonbedandbreakfast.com/uploads/1/3/1/4/131452958/tokuwoxu_veselelolabot.pdfIn PDF document text
    • http://petivimit.childemotionregulationlab.org/uploads/1/3/0/7/130775565/gasepavurilum.pdfIn PDF document text
    • http://files.neisdoap.com/uploads/1/3/2/3/132303378/4333660.pdfIn PDF document text
    • http://zemadazol.eadhabread.com/uploads/1/3/0/9/130969149/sikatawudor.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/1/0435/2072/1055/files/biblia_ya_kiswahili_agano_jipya_na_la_kale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/fipife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/nojaroxuforuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4514/0118/files/73324717929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6280/4136/files/madupogutipup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/pisawupezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/silurusepafalatiniwewaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/fokavonosonotap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7339/7145/files/sudabokabarezur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4582/6205/files/bhagavad_gita_stephen_mitchell_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8234/0770/files/magi_the_kingdom_of_magic.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_off00007cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB0 5220 bytes
SHA-256: ca9a824c0d97c8df200aa9f257e95f9aa8d40f750d3b77cc0cf01841a79b22d0
font_01_sfnt_off00008e4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E4B 10820 bytes
SHA-256: 10ec02fd6d630cf0e56bdcdbbb0e9d230e8e50df6c1bff6f83ba59b8907d9533
font_02_sfnt_off0000b17b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB17B 16076 bytes
SHA-256: b67cbb8e18f25db78dc5224b2fcadc330409e4987dee2a84b3505743999eb4ec