Malicious PDF — malware analysis report

Static analysis result for SHA-256 f423d4d35fc53430…

MALICIOUS

PDF

43.0 KB Created: 2020-08-05 06:11:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d522c7ca1d7efa955d57ae96a3fadb28 SHA-1: 815c23371d13f8729ac5e6e3163fa92938b124ca SHA-256: f423d4d35fc53430a51e99c8d3cca6f661e008d7d9d6cfc960671576e74e6615
202 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=best+pdf+to+word+converter+online+multiple+files`. The document body also contains this URL and numerous other links, many hosted on `cdn.shopify.com` and other domains, suggesting a link farm designed to attract traffic. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted from this sample.

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.cc/pify?keyword=best+pdf+to+word+converter+online+multiple+files In PDF document text
    • http://files.oxfordshirekickboxing.com/uploads/1/3/2/7/132740435/59bd6efb39.pdfIn PDF document text
    • http://files.anytimemovers.com/uploads/1/3/1/4/131406288/xivatujudeso_ralogumebepuk.pdfIn PDF document text
    • http://files.jerseycarpets.com/uploads/1/3/0/8/130814216/2983082.pdfIn PDF document text
    • http://files.hordlevoluntarycare.org/uploads/1/3/0/8/130874413/zoladamalija.pdfIn PDF document text
    • http://modadika.kinobykimie.com/uploads/1/3/0/7/130738748/puxekidivolaki.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/1/0430/0341/2633/files/importance_of_forecasting_in_public_policy_formulation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/55746714155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7969/5526/files/vakobebodizaletivex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/581871399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0739/3439/files/xafegixekulokopidobijagaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jaxigosileworu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3533/6605/files/52041544871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/8891090038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/denedawijamewuvuxeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1802/6141/files/90629067140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18491093394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4736/0414/files/home_interior_design_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4154/4599/files/lee_load_all_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4853/3142/files/31319770730.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_off00006a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A34 5292 bytes
SHA-256: b82283ad10266133ccf2d28991791a8a61fdf69d8a91256b870a169be04978d8
font_01_sfnt_off00007c40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C40 10024 bytes
SHA-256: 0604e912e3433bdc7e15dc9f00029ffac6c87843d0a7e121069dac7846481d05