Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b6ab54ee766756…

MALICIOUS

PDF

51.1 KB Created: 2020-08-22 21:33:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f215b109e3bd8c25a4fc5ef2988fb32 SHA-1: 2946818c3048bf7e09ac7cce183e568bed38d280 SHA-256: 64b6ab54ee766756724cb1aa0332d1420012e4abb10eef827daea5da08854beb
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to a redirector service, indicating a likely SEO spam or phishing campaign. The document body itself is heavily obfuscated but contains the primary redirector URL, suggesting the intent is to drive traffic to malicious infrastructure. No scripts were extracted, limiting further analysis of execution chains.

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=jasoda+sarkar+new+baul+song In PDF document text
    • http://files.oddsockscandles.co.nz/uploads/1/3/2/7/132740234/1798037.pdfIn PDF document text
    • http://files.revlindasings.com/uploads/1/3/1/3/131384573/xumis.pdfIn PDF document text
    • http://zulax.cindycheng.works/uploads/1/3/1/4/131406717/porifamowu_wuxevu.pdfIn PDF document text
    • http://files.asfi2020.com/uploads/1/3/1/4/131453455/tixixim_vumibif_malisisobes.pdfIn PDF document text
    • http://files.planninginblackandwhite.com/uploads/1/3/2/7/132710655/bobuzugipiz_renele_litazafurusagop.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/1/0431/5113/0785/files/35212088752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/4944/5526/files/paroriduzerokapaxesarul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9456/4252/files/caremark_prior_authorization_form_for_adderall.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9612/1248/files/pefudagirulidefolojivasab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/dapereda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tokisesuzarutaxiwiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/effective_email_writing_skills_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1709/1744/files/fovasitirilowadifejibun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1613/4551/files/sadiruwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7204/4697/files/milan_italy_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8561/7566/files/brownian_motion_and_diffusion_freedman.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_off00007e3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3C 5276 bytes
SHA-256: 7975d94332996e20c3e35cee74c8a4de9de4743f2f6459062e2ee8051d827676
font_01_sfnt_off0000904b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x904B 14748 bytes
SHA-256: 528b5718e5c08ce06a598b78cfd3c0f2f5299b53d6615ee434043d9208845641

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