Malicious PDF — malware analysis report

Static analysis result for SHA-256 15dc40909419ad28…

MALICIOUS

PDF

46.0 KB Created: 2020-08-07 02:41:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a2a41cbc108430fb49bf52d6a64f3fb SHA-1: 70da036bd8ea07c45d6b245debf41d2e5f666d2c SHA-256: 15dc40909419ad28eb57b733fdb817aa6bb42b34e25fed8d226f9e647133672b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links to external resources, many of which are hosted on domains associated with malicious redirector infrastructure. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting an attempt to distribute malware or conduct phishing by luring users to click on seemingly legitimate but ultimately harmful content. The primary redirector URL identified is https://ttraff.cc/pify?keyword=angielski+test+z+czas%25C3%25B3w+pdf, which is flagged 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=angielski+test+z+czas%25C3%25B3w+pdf In PDF document text
    • http://files.hrc-xray.com/uploads/1/3/1/3/131379266/jezisaden-dopulezasaxa-medalowo-nigufokada.pdfIn PDF document text
    • http://files.menopausalmommyrants.com/uploads/1/3/1/0/131071289/3649917.pdfIn PDF document text
    • http://files.theachoostics.com/uploads/1/3/0/8/130874009/1396455.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/1/0428/9835/8432/files/mofofuledezenededur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/87924399785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6244/2646/files/63633662477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9465/4632/files/59786649709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8425/9231/files/como_hacer_un_ensayo_descriptivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/43137995938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6038/7227/files/xovadopoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0745/1029/files/industry_and_company_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3749/8276/files/zozonekusavifizemewijepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7644/2519/files/43119569544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0256/8599/files/jisosidiket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/probability_statistics_for_data_science_ankit_rathi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6340 5236 bytes
SHA-256: 953aa75dd53b579d802db9527a778084da3feb6bf04eedb6eca1513959668337
font_01_sfnt_off0000753c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753C 12196 bytes
SHA-256: 7521305af556ba8edd093a23cd4e57c5917b9481419fa0d167d101b678192b90
font_02_sfnt_off00009b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B4E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3