Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4f20eba31323839…

MALICIOUS

PDF

59.2 KB Created: 2020-08-03 21:05:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 45a1e5529a3b6176d588fe73d3c98f49 SHA-1: 4c54a26aedc0cf6426a9feec36fa0bb477b37b2f SHA-256: d4f20eba313238390e0f571aa82c8ebae5e04f29ec0d336402e5c8ced9efdd9e
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL 'https://ttraff.com/pify?keyword=the+art+of+molecular+dynamics+simulation+pdf+download'. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution.

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=the+art+of+molecular+dynamics+simulation+pdf+download In PDF document text
    • http://files.triplecanyoncatahoulas.com/uploads/1/3/1/4/131438265/nugebapero-peleperexaguk.pdfIn PDF document text
    • http://files.perciakwedding.com/uploads/1/3/1/3/131398164/9951377.pdfIn PDF document text
    • http://files.faithmortimerauthor.com/uploads/1/3/0/8/130874141/4623097.pdfIn PDF document text
    • http://files.redbirdvocalmusic.com/uploads/1/3/2/7/132712163/feninili_rigev_rapinoragode_nutumoges.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/81581124885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7474/7558/files/github_360_controller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/1956282508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/10514194225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/6132335953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7938/4736/files/89403059102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mofofuledezenededur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/tv_guide_columbia_sc_time_warner_cable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5841/1158/files/central_machinery_lathe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/bepakokedaxakexod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6238/6074/files/77615183852.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D8 5420 bytes
SHA-256: 0e29c4fde6f9ef820b9e121bfb99ecec2f3bf95ef121ff7e668b8f894dc60d00
font_01_sfnt_off00009836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9836 10636 bytes
SHA-256: 31b12edb32f18467493fc391472707764db57496f870482ccb51790f3d509696
font_02_sfnt_off0000bc45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC45 16112 bytes
SHA-256: 23e5e0a6ad5360bf10628433507e5aab34c42d7d900ccb2a5214949f2168b422
font_03_sfnt_off0000d115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD115 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2