Malicious PDF — malware analysis report

Static analysis result for SHA-256 215706c10eead56b…

MALICIOUS

PDF

39.8 KB Created: 2020-08-06 17:53:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e99503add77c3dc28de4f27639debadb SHA-1: e4e7752cc1129c56afd85e18444d6da4a61e974c SHA-256: 215706c10eead56b1b1b47d10f42cb3da2e94a97c44fcf7776987699b01ca04c
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=bls+cpr+book+pdf', indicating a lure to download a PDF. This suggests the document is designed to redirect users to malicious content.

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.ru/pify?keyword=bls+cpr+book+pdf In PDF document text
    • http://files.cloudchiefcompany.com/uploads/1/3/2/7/132710603/6414413.pdfIn PDF document text
    • http://files.somersetrehab.com/uploads/1/3/2/6/132682833/1207190.pdfIn PDF document text
    • http://files.photosbyjoierey.com/uploads/1/3/1/4/131453276/2764440.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/1/0432/1912/4382/files/55093784611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6041/8970/files/masizajuxasepeviwelew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0134/8255/files/34571502713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/10309645870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/82337128246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/vixaraxupemubewonan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9208/0795/files/mixamexuwefokig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8039/1585/files/18204483898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0809/7445/files/24175140840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/dumuloxuzikufonejedujak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2724/9826/files/75581626016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0004/5465/files/19621902669.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 7

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_off00005e55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E55 5192 bytes
SHA-256: b664355be905fef973adf645f22542dfe1b286170b1ad344cffa2e696c3319a5
font_01_sfnt_off00007012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7012 10208 bytes
SHA-256: 2d15050831c2a310d67d11ab88aa81af8d9159240a7e0b9151fed9f1d221397e

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