Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b5d18d130cae21c…

MALICIOUS

PDF

54.7 KB Created: 2020-08-17 04:28:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e524f4bb5d206e939a6a2a2f8148bec SHA-1: e1a551e131a9450f98420061515db7984788471c SHA-256: 6b5d18d130cae21ccfd8d999fc5e23554945c570a8911dcda67f6344f7b9d03a
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service (`ttraff.cc`) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the redirector, suggesting a phishing or scam attempt to trick users into downloading further content. The ML classifier also strongly indicated maliciousness.

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=enterprise+architect+13.+5+user+guide In PDF document text
    • http://files.jsiglobalinc.com/uploads/1/3/1/3/131398605/wejekujox-tetodupuza-xaweti-jizijadeg.pdfIn PDF document text
    • http://files.lizleyden.com/uploads/1/3/0/8/130813906/xixevumamagupe.pdfIn PDF document text
    • http://dikarurof.templeoftheola.org/uploads/1/3/1/4/131437792/244ff.pdfIn PDF document text
    • http://files.glyniskozmacoaching.com/uploads/1/3/1/4/131438329/kurag-zarim-nirizekififu.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/1/0430/5669/3397/files/65864029459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4540/2277/files/brownsea_island_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/statistics_4th_edition_freedman_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1044/8795/files/nulejusupuzigobor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/16285848583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1247/9382/files/10684489584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2406/4410/files/29514453505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7354/9974/files/49598630882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7752/3861/files/tubizo.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 8

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_off000095fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95FC 5632 bytes
SHA-256: d56b7f3a928b3b66095286e2223e506d85bad271c72efc3ca6ef64100bc4d1b2
font_01_sfnt_off0000a91d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA91D 10620 bytes
SHA-256: 32e40d11f212b1fe48c6bc6b8cc741abdeda926fb784d3e27d43c3505228b33e

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