Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b39e9e6a6cb3da1…

MALICIOUS

PDF

40.3 KB Created: 2020-08-15 06:18:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad7b0a94a57e3298918787772b9d393b SHA-1: 97549b9911e5b51f9d0c3d5a4ff6740de29587d7 SHA-256: 6b39e9e6a6cb3da189dcefa339fcc02a032a181d132cc3460be0a34c9ea0d1d4
194 Risk Score

Malware Insights

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

The PDF contains a link farm and redirects to a malicious URL, suggesting a phishing or scam attempt. The embedded content, though obfuscated, includes the malicious URL and links to numerous other PDFs, indicating a coordinated effort to distribute malicious content. 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=upvc+shiplap+cladding+sheets In PDF document text
    • http://files.ecabalquinto.com/uploads/1/3/0/7/130739470/6434253.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/1/0429/6926/8383/files/bidisokozumojiwate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5667/6507/files/99015104389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuketunaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2170/5124/files/morty_big_brother.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/88408508657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7029/9048/files/4026308628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9586/8067/files/9558822688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/xixurob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/actionscript_3_game_programming_university.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7451/9201/files/pirolapeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5466/0758/files/35559909230.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 1

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_off00005f8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8E 5288 bytes
SHA-256: 6460b7b9b6e86c4ef117fc40a2acec854e6eab4e62946ea9fb76e25f4dea6479
font_01_sfnt_off0000718b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718B 10280 bytes
SHA-256: 302e79d501aec4cfbe69da36076cb40e141080bab4073f7738c5c35588b0dd2b

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