Malicious PDF — malware analysis report

Static analysis result for SHA-256 c55f37234c96417e…

MALICIOUS

PDF

55.4 KB Created: 2020-08-09 04:04:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: faa7bc4d54f85db1ac86a15c0d60f139 SHA-1: c8a301d75f7bb1715669883c742aef5843c450fa SHA-256: c55f37234c96417e60941d23a87d7fd65d78147abff6d2d1892afe1c3563f2cb
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or redirection strategy. One prominent URL, https://ttraff.com/pify?keyword=the+1945+manchester+pan+african+congress+revisited+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The ML classifier 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=the+1945+manchester+pan+african+congress+revisited+pdf In PDF document text
    • http://files.frostbottomstudio.com/uploads/1/3/1/8/131871864/lizodegex-xisuzibirepexa.pdfIn PDF document text
    • http://files.danrednermusic.com/uploads/1/3/1/4/131437886/22e01a4d8.pdfIn PDF document text
    • http://files.shaloha4u.com/uploads/1/3/1/3/131382595/dawosuso-namalupun-movolebedipi.pdfIn PDF document text
    • http://guzolefaf.olddouneroadnursery.com/uploads/1/3/0/7/130738799/9e8c3068b9aa0.pdfIn PDF document text
    • http://files.calliemetlersmith.com/uploads/1/3/1/3/131398164/zefifivorovog.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/1/0429/8027/8426/files/89097885088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/62772018161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6521/2066/files/water_pollution_act_1974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vinufew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6405/7238/files/98918645261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5505/5002/files/35175169184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5162/2305/files/sojeruv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4192/9886/files/feguwefikezirifozomumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0453/8528/files/syllogism_in_reasoning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/97246925398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1062/9532/files/navixepokexumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2308/0344/files/21636634701.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 6

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_off00009443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9443 5964 bytes
SHA-256: 91a2088c8858de2e83c71103113c2466e0938d557ea3e9f5a78030f788db3da6
font_01_sfnt_off0000a87d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA87D 12272 bytes
SHA-256: 3d6b4c486ecfe5558cc1ebc92a352df8407a36c031eee30dde91dd7991270ace

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