Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab20c4a1f87a50fb…

MALICIOUS

PDF

44.3 KB Created: 2020-08-11 02:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bfaebb86ccc1b49f86e7622bc6a22a15 SHA-1: 2c95910f47d02315c3c7e66a020dc0488da3b8ea SHA-256: ab20c4a1f87a50fb20a747420be433d81a5515ac31d62b159ae0ea9d204639f9
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body text and the malicious link suggest a lure to a "best pdf to word converter" scam, likely intended to lead users to malicious content or phishing pages. The ML classifier strongly supports the malicious verdict.

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=best+pdf+to+word+converter+software+name In PDF document text
    • http://tubul.mountviewuca.org/uploads/1/3/0/7/130776418/budefu_podul_romomulug.pdfIn PDF document text
    • http://files.threeringrascals.com/uploads/1/3/0/7/130775795/xedasewuw.pdfIn PDF document text
    • http://files.buildingpeacefulcommunity.org/uploads/1/3/0/7/130776855/limotafi.pdfIn PDF document text
    • http://files.thenookdcp.com/uploads/1/3/0/8/130873855/7777153.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/1/0434/7818/8198/files/19327518961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7289/6672/files/lejegalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4537/0521/files/nusojilaliposexaluvubidor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0216/5410/files/weatherking_furnace_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2580/0087/files/189375643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0455/8486/files/bessel_function_properties.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/27610759795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1024/3230/files/27155942076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8933/0325/files/titaxigagimamomop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/sufatuwuzunupekugafegor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6193/6282/files/14829723767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9114/9471/files/36324246350.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 4

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_off00006f9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9B 5472 bytes
SHA-256: f1a2be3b0204fc742306ea8721a604c3f645d8c9865e0c0c7174d776b3b116f9
font_01_sfnt_off0000823c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823C 9968 bytes
SHA-256: 79f32f0a22e0bb6207c0790d855d01e73fa8ebf7b2ac4d8f075f2ce81a7a52ad

Open this report in the interactive analyzer, or submit your own file for analysis.