Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1869e4737222db3…

MALICIOUS

PDF

50.9 KB Created: 2020-08-04 10:28:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43dcdc050a34f3f8ca76e68525806259 SHA-1: e92e1cfabdb87d07d279418d2636f5cc227e5a56 SHA-256: c1869e4737222db30c17f1dbc80b6c413c01eadeea112d9be496b9ea450f163e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=arduino+duemilanove+manual+pdf`. This indicates the document is designed to trick users into visiting a malicious site. The document body, though heavily obfuscated, contains references to 'Arduino duemilanove manual pdf' and the URL `https://ttraff.com/pify?keyword=arduino+duemilanove+manual+pdf`, reinforcing the lure. The presence of a link farm heuristic further suggests a malicious intent to distribute links.

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=arduino+duemilanove+manual+pdf In PDF document text
    • http://files.philiphuddlestonephotography.com/uploads/1/3/1/0/131070508/lobamebamo.pdfIn PDF document text
    • http://files.luxfabusa.com/uploads/1/3/1/4/131453247/ruworolawodaxen.pdfIn PDF document text
    • http://files.oagirlsbasketball.com/uploads/1/3/2/7/132741099/tanekakimisu.pdfIn PDF document text
    • http://files.deltapsichapter.com/uploads/1/3/0/7/130776573/30e65706fa0dc1.pdfIn PDF document text
    • http://files.stillnessandchangeacupuncture.com/uploads/1/3/2/6/132681352/8dae7.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/1/0432/1027/7025/files/87898036259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6192/6293/files/goku_ssj_god.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5235/1144/files/5699923447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0806/3649/files/46874467680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6244/2661/files/xuvuwesiwidewibalane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1581/2766/files/5210486039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/19848258203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/gnu_make_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5987/9841/files/pobamipimagoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8202/8958/files/tolusalapapikurido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4017/8333/files/68488524473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/35502536312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6486/0575/files/depabirebasoxiz.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_off000089fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FC 5060 bytes
SHA-256: a3a5f4886d78f59456813ccd9a4b8c2acf022cc45630a236d48b5015fd8a4a77
font_01_sfnt_off00009b22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B22 10296 bytes
SHA-256: 39c8eb5fbdd4fa9d5aa173898c0ebb58dcbc06381425aa0d0d19fa7c9da168a6