Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a837eff3288a02…

MALICIOUS

PDF

48.1 KB Created: 2020-08-21 23:58:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9fc3d932d950d248c086123e9279cc9f SHA-1: 2a7bd1a9d0bb7154091e2354c10e134f812033c2 SHA-256: 36a837eff3288a024add01f317b4787a9937b32ab5b2e36f68a9c9181953b825
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, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Baldi's Basics' and the malicious URL, suggesting a lure. The presence of a PDF link farm heuristic further indicates malicious intent to distribute links. The ML classifier also strongly flagged this PDF as malicious.

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=baldi%2527+s+basics+free++mod In PDF document text
    • http://files.atruechristian.com/uploads/1/3/0/8/130813042/solotub_wokuwu_regitopedolalib_garorijogapowuz.pdfIn PDF document text
    • http://webed.moodyplumbinginc.com/uploads/1/3/1/4/131438044/3458667.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/1/0430/5967/5293/files/88969779520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/figarawevig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6923/3557/files/asymptomatic_bacteriuria_in_pregnancy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8694/6212/files/82842776995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6382/0959/files/99136946552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/23586166733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4365/8650/files/varicose_vein_examination.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3621/1357/files/49993320800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4502/2870/files/fuxog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4179/0871/files/wurujegutero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/lesezuzodilojek.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_off00006770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6770 5392 bytes
SHA-256: bec031dc8562a4c6b6761b6f12af223377bb873a43afb907535498cca635a9fc
font_01_sfnt_off000079a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A6 10560 bytes
SHA-256: 451d8391d0a5d099b5bd30a2e2f16821dee389b7d87fe788303e616fbf354be5
font_02_sfnt_off00009db4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB4 16332 bytes
SHA-256: 91c92fab729f552433758475f1ecf6a366c66c74ae6b4dd9e31a9a0100f2b42c

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