Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae5f4b21048d9a91…

MALICIOUS

PDF

36.7 KB Created: 2020-08-23 22:42:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b84f7ef424837fa0f654272ff95ad5eb SHA-1: f7dfd7da9410ab657c1772fa86017c978aa5c393 SHA-256: ae5f4b21048d9a9189856f16903f3131d2351c462b1bd7206bfc505c01840967
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a prominent one leading to 'ttraff.com', identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'goudy font free' and the 'wkhtmltopdf' tool, suggesting a lure to download a font. The presence of a malicious redirector link strongly indicates a phishing or social engineering attack aimed at directing users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=goudy+font+free In PDF document text
    • http://files.ramseybaptist.com/uploads/1/3/1/4/131483019/fd1c75.pdfIn PDF document text
    • http://gazesir.friesenfruits.com/uploads/1/3/1/4/131437987/vorurojovemud_wegagejoruk_rozelulo.pdfIn PDF document text
    • http://ropavotuw.internetadvert.net/uploads/1/3/2/8/132814930/jebaluvawi.pdfIn PDF document text
    • http://files.dirtypawprintsaussies.com/uploads/1/3/2/7/132740214/nopajafubumel.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/1/0436/6693/1865/files/52031091335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3749/1354/files/gupatogimajad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/vodejitalojobubobux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/vuvenoxav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6216/files/kibito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7768/7701/files/28514094274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/pumesesafiwobenun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3584/5017/files/12667768194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1685/5453/files/definicion_de_diabetes_mellitus_tipo_2_segun_la_oms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6634/3072/files/99454270170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5592/2852/files/denixalefig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1949/9682/files/dowry_kalyanam_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/gothic_architecture_history.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_off0000541d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x541D 4616 bytes
SHA-256: 57268da7df99112a7e88f47799c18a599c6920dc92b8f373413ea5c0f83c4259
font_01_sfnt_off000063eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EB 10040 bytes
SHA-256: 6d03abcd5ba34be951ed5274fe9fce282e7cbb3e5a449d17a044dbb8ead7d32c