Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4b52f90a5a88d24…

MALICIOUS

PDF

58.2 KB Created: 2020-08-19 18:45:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd05439ee6050660ed1b7ba0fb6fd942 SHA-1: 4c24e9c706881c0fcb4ab883b337d3632c740d66 SHA-256: a4b52f90a5a88d249f609bcdd4abe531b00d6d29bc444d1a5eb528b15faa8f15
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits a PDF link farm heuristic, with numerous links pointing to external PDFs, including one hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same URL as the redirector, suggesting the document's primary purpose is to trick the user into visiting this malicious site.

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=jasper+reports+tutorial+java In PDF document text
    • http://files.easw.net/uploads/1/3/0/7/130776346/d0b0e25edac.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/1/0432/0909/7384/files/nesegudevadepavoxexax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/xurofapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6866/1670/files/balatewuvufanufunimotomaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9128/7450/files/nurses_interview_questions_and_answers_icu_department.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70339383958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1042/2941/files/bubble_chart_template_xls.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8326/8263/files/japejisaxafifetetimelivid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2080/4518/files/biogas_plant_design_and_construction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/think_race_and_ethnicity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9708/7390/files/49497093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/azazel_guide_tekken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9070/5574/files/donuxifoviluxevisagisasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/xidemesixeda.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FAA 4936 bytes
SHA-256: dca41309018a38da7d84fa4b75694d394c9ae645c004c6143a54e8ca367ea099
font_01_sfnt_off0000b08a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB08A 13560 bytes
SHA-256: 87b96a6dc5eb5aabdb05ba9e91a2f74d35109bae43aad787411f1c87f4dcee44

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