Malicious PDF — malware analysis report

Static analysis result for SHA-256 15eb4619915b4eb6…

MALICIOUS

PDF

57.4 KB Created: 2020-08-05 01:28:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa05d6036ba7fc8d72ced1c4c3f20436 SHA-1: 4094da2f689805873dfaebddbed34f89584d3d1c SHA-256: 15eb4619915b4eb6b3f75afd54d169bd58f4087bb74d961990c5ac4fd3649a1e
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to create an SEO link farm, with a primary malicious redirector URL identified. The document body, though heavily obfuscated, contains the malicious URL. The ML classifier strongly indicates maliciousness, and the heuristics point to a redirector and link farm strategy.

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=el+neoliberalismo+en+m%25C3%25A9xico+pdf In PDF document text
    • http://files.designsbydebllc.com/uploads/1/3/1/3/131380308/3202943.pdfIn PDF document text
    • http://files.debbiemilnerlively.com/uploads/1/3/2/8/132813998/xubimusanixigol-savefope-rufojaba-mexipub.pdfIn PDF document text
    • http://files.potentialgamestudio.com/uploads/1/3/0/8/130815014/xeputob.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6851/3686/files/nikoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/2219428056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/9547887332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/34326607389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6523/5866/files/hailstone_sequence_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/61863005395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/zumilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lomapatigusobotatijizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9561/1805/files/narine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/27282915620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9008/1960/files/synonym_for_write.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9815/2866/files/29933225995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/60909450159.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000902c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x902C 5316 bytes
SHA-256: ecb5349ad9fef72497394379660e28089be76f1950710c4a20905056104e4571
font_01_sfnt_off0000a1c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1C8 11840 bytes
SHA-256: 33dbafb7377f8fe02789798515cdd771319dbf36cb8bd2dc87f921497432d761
font_02_sfnt_off0000c823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC823 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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