Malicious PDF — malware analysis report

Static analysis result for SHA-256 75dcb27326bbd805…

MALICIOUS

PDF

39.5 KB Created: 2020-08-08 07:07:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1e0b79f3334e4154a09ee1b024ca4ced SHA-1: fb615006123f247c76df84c080137de1c246ecdd SHA-256: 75dcb27326bbd805dbd1e41e5d2ddeab80765e339085be20a5d6beace077f619
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links and images that redirect to a malicious URL, identified as a redirector. The ML classifier strongly indicated maliciousness, and heuristics confirm the presence of a link farm designed to lure users to potentially harmful sites. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection.

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=separately+excited+dc+motor+pdf In PDF document text
    • http://files.businessbcs.com/uploads/1/3/2/7/132740343/e9c81eaa854.pdfIn PDF document text
    • http://rakepuvi.patriciabridewell.com/uploads/1/3/1/1/131164250/vupezaxojux-nosugaxifit-fepufivimag.pdfIn PDF document text
    • http://files.mynorthraleightutor.com/uploads/1/3/1/0/131070459/9522092.pdfIn PDF document text
    • http://files.perkiblog.com/uploads/1/3/1/0/131071082/nulasipulul-sibexumejoton.pdfIn PDF document text
    • http://wujipibo.tlvallewood.com/uploads/1/3/1/6/131637136/9549c6d.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/1/0432/5195/7923/files/89825973354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/breathing_underwater_full_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/career_development_interventions_in_the_21st_century_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4809/2323/files/transformation_of_sentences_affirmative_to_negative_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/10643317080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/gravely_zt_42_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1979/6643/files/55905119768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3663/8360/files/chaseonline._chase._com_myaccounts._aspx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0228/1633/files/xevafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/senodam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7465/8197/files/bodajiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/safety_harness_belt.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_off00005bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFE 5396 bytes
SHA-256: f6210528b845b079cf788585db7c04f2bb7f643d7f6c847c7e7f88ec6e817c72
font_01_sfnt_off00006e55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E55 10236 bytes
SHA-256: 579b12b9dddca76350f21e73d93cbb0709ae4d6c92d8bef53e6651ae8eb93083

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