Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d6007dcfddf371b…

MALICIOUS

PDF

50.2 KB Created: 2020-08-09 04:51:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4158893686b289c0c42f72cb6ec6efd8 SHA-1: b68b18467bf3e94c66b5f9fc7d5b5cfe7aa1cc06 SHA-256: 4d6007dcfddf371b741ae76b9da0e411d99ff1e5ecd38a3f474b4deee740285f
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL, 'https://ttraff.com/pify?keyword=ncert+biology+book+class+11+solutions+pdf', is designed to lure users by appearing to offer educational content. The PDF structure and the presence of numerous external links suggest a link farm or redirection attack designed to lead users to malicious sites.

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=ncert+biology+book+class+11+solutions+pdf In PDF document text
    • http://files.smtrackandcc.com/uploads/1/3/2/7/132740584/wopadabejotujixugi.pdfIn PDF document text
    • http://files.sounbulamills.com/uploads/1/3/1/4/131453007/7319016.pdfIn PDF document text
    • http://files.arkangelcreations.net/uploads/1/3/1/4/131437444/1805632.pdfIn PDF document text
    • http://files.thesmallhinge.shop/uploads/1/3/0/8/130813409/nofenezifiluta_gejoj_mugokedofazedo.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/1/0435/6440/0798/files/vivalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9168/0666/files/fatebasawabakujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9925/1097/files/tweaks_for_ios_8._4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/dammit_guitar_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3378/7542/files/coenzyme_structure_and_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8268/6370/files/tovaranipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1228/4831/files/69_chevy_c10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/mugisovofeduwituxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/basic_c_programs_for_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2171/9959/files/guguvabig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7881/9735/files/66232737007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/absorcion_de_aminoacidos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/23584790547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6021/4425/files/apostrophe_for_possession_exercises.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_off000085e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E4 5648 bytes
SHA-256: fc1082452d62fe56814d75a1fbd69317de264ebab44a2e6f29fe6a789d893eaa
font_01_sfnt_off00009941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9941 10040 bytes
SHA-256: dad2ae694e8ca56f0c8daf5cd85da61ef3b6ab6825aee868eea94a8249d1560e