Malicious PDF — malware analysis report

Static analysis result for SHA-256 9450876ef139f505…

MALICIOUS

PDF

42.2 KB Created: 2020-08-01 15:47:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90a3edb0e7187190ac3bbcdb08bc2f89 SHA-1: c7605728b07ee8a929a7c100874f32291fcec3ab SHA-256: 9450876ef139f505c6cf54af04e7bdf8e3a7126bb2037c1e86463000e21054a5
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link redirecting to malicious infrastructure. The document body, though partially corrupted, suggests a lure related to 'guide to network security pdf'. The primary malicious URL is https://ttraff.cc/pify?keyword=guide+to+network+security+pdf, which is likely used to redirect users to further malicious content. No scripts were extracted from this sample.

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=guide+to+network+security+pdf In PDF document text
    • http://files.salpiconontario.com/uploads/1/3/2/6/132695397/3367778.pdfIn PDF document text
    • http://files.lomalivestock.com/uploads/1/3/1/3/131384113/826095e262fe.pdfIn PDF document text
    • http://files.mds-singapore.com/uploads/1/3/1/3/131397930/8756154.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/1/0428/9586/8057/files/wifuwite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4716/3806/files/31006217898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0724/4450/files/38904296097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/97843503849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9567/8357/files/13785130941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/killing_me_softly_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/44651817525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5018/0514/files/damewumasilagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6955/3305/files/42763731977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/39724419926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/96088939802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jepomosojavadoji.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_off000068c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C4 5196 bytes
SHA-256: 1d2297b581053591e8f16568a9c108855fd497aca6b8199acd63653c8b43730a
font_01_sfnt_off00007aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA5 9856 bytes
SHA-256: 0efc824d2501f388119581a413e4cede8ac4c8746075c43b49470d2e657f7c77

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