Malicious PDF — malware analysis report

Static analysis result for SHA-256 0528bdf4270f9667…

MALICIOUS

PDF

52.1 KB Created: 2020-08-09 10:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4875b7c7823389be7cbfd54889d19648 SHA-1: 8a4652ed71efd49851426054e77b258f32da5885 SHA-256: 0528bdf4270f96671725efadd7cd56b51450d29a1a85f00be157dfd4f2934db9
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=alfabeto+hebreo+espa%25C3%25B1ol+pdf'. The document body, though partially corrupted, also contains this URL, suggesting an attempt to disguise malicious content as a legitimate download. The ML classifier also strongly flagged this PDF 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.com/pify?keyword=alfabeto+hebreo+espa%25C3%25B1ol+pdf In PDF document text
    • http://files.alisonjerrydesigns.com/uploads/1/3/1/0/131070327/6f89fc3a5877.pdfIn PDF document text
    • http://files.robertknudson.com/uploads/1/3/1/3/131380440/07cf0aa6b6.pdfIn PDF document text
    • http://files.realwalks.com/uploads/1/3/1/4/131453522/cbab6482.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/1/0431/1220/2389/files/dujokunerezet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8307/9588/files/42752401569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/e5_b0_86_e5_a4_9c2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6265/7177/files/kekafemagojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugogesobiwem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2409/7191/files/tinanarokoraxowim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2945/5271/files/42920791818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/filosedilokamabenikuwojij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8514/3969/files/xidumafovikajewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6111/6064/files/46315196491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8187/5112/files/rewefesidatevoraru.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_off00006f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F53 5472 bytes
SHA-256: 9b1304cd58a9a0dd3fa4d1aa8f89856e3973d614938ae4dc1bb527bd9fd396b8
font_01_sfnt_off0000819a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x819A 22232 bytes
SHA-256: 281d728b04ebe7f64686fe4d205d87799189039edb53ff3b62c77293c6cafa92

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