Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d60e628e140bd97…

MALICIOUS

PDF

46.8 KB Created: 2020-08-27 22:40:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6107f43c0af3637cfee3b397f9814870 SHA-1: 7428567148bef0f279576de2634b381aec97b9c1 SHA-256: 5d60e628e140bd978cdff81ce1ed118a95494baa6ae6aef21207e1a87c3f51c6
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious infrastructure, specifically designed to lure users with fake download offers. The ML classifier strongly indicates maliciousness, and the presence of numerous external PDF links further supports a malicious intent to distribute further payloads or engage in phishing. No scripts were extracted, but the PDF structure itself facilitates the attack.

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=blitzer+college+algebra+6th+edition+pdf+download In PDF document text
    • http://files.iditarod100.org/uploads/1/3/1/3/131379039/b7de9.pdfIn PDF document text
    • http://files.breatheserenity.com/uploads/1/3/1/4/131406544/9072758.pdfIn PDF document text
    • http://files.rpsings.com/uploads/1/3/1/6/131606003/335d86abe42a33d.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/1/0430/9227/9460/files/lolokuxerov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0324/8803/files/english_descriptive_writing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6912/9372/files/tujipusovokexumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/39408190972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/cheat_engine_6._1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/42423651149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0449/2950/files/alexis_carrel_viaje_a_lourdes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4463/4773/files/najamugerejajov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2648/2071/files/71036732728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5706/1796/files/kundli_pro_software_by_durlabh_jain.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_off00007654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7654 5724 bytes
SHA-256: 981739947cc13f1dcc6aef1703b3c698fe064749c22f4b4b0bcf788d2ab83ac9
font_01_sfnt_off000089db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89DB 10800 bytes
SHA-256: cc44a527f856496d5316ac60ffb3aca664f34328fd3167509c214f24a63c8d19

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