Malicious PDF — malware analysis report

Static analysis result for SHA-256 84b6070ea31f2d57…

MALICIOUS

PDF

53.8 KB Created: 2020-08-11 19:26:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f2d749bbc7d9cca106cab35c7698ed9 SHA-1: e479747b83039aa339059a441a1132a96eb6f563 SHA-256: 84b6070ea31f2d57fe3fe107f772d76830a187432f9826e901c86d4e11b43e55
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that appears to be part of an SEO-based link farm designed to lure victims with search terms like 'active directory interview questions'. The ML classifier strongly indicates maliciousness, and the presence of redirector links suggests a phishing or scam attempt.

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=active+directory+interview+questions+and+answers+l2+pdf In PDF document text
    • http://files.hannahcookmarketing.com/uploads/1/3/2/7/132740384/3f7c8.pdfIn PDF document text
    • http://files.legaljj.com/uploads/1/3/1/6/131607712/3849310.pdfIn PDF document text
    • http://kijopanav.theunfinishedsoul.com/uploads/1/3/0/8/130874601/2605133.pdfIn PDF document text
    • http://luraxuvow.apollopresby.org/uploads/1/3/2/6/132680813/kabamalebodexewom.pdfIn PDF document text
    • http://files.jgreenartofficial.com/uploads/1/3/1/0/131070450/6b6a0382ce33c05.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/1/0446/1743/3251/files/khan_academy_mappers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/61510426971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3882/6918/files/domek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1313/4741/files/43429543442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/rijetifilexasuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9798/1089/files/linovixitovuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0152/6948/files/pci_design_handbook_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0667/3575/files/nikadirekarisizaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0762/2824/files/xemibinew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74195332560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/25272324385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zigomotixiwututorevibalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/97874160625.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_off0000928b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x928B 5648 bytes
SHA-256: 895a395cf96dc4b74dcb5b7a0474e73f18b662b50554f18d6cd69b99fc0ded14
font_01_sfnt_off0000a5ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5EE 10412 bytes
SHA-256: f7c38eea15474dc44286a9f5ece60d56a7d7a4a3c6653d8e3da81cbe6bd3b167

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