Malicious PDF — malware analysis report

Static analysis result for SHA-256 26a93e426695c577…

MALICIOUS

PDF

42.1 KB Created: 2020-08-02 16:44:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a9273289ab059e4736e839de1d23e7fe SHA-1: 175b403ebad566f0b8f4712bce19fe7017cd1f1b SHA-256: 26a93e426695c577f0e7560c6dd01d33fa7ebf0a1e17be1678358590f8f11700
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The ML classifier strongly indicates maliciousness. The embedded URLs and the heuristic firings point to a malicious redirector used to host or link to further malicious content, likely a phishing attempt for credentials or to download additional malware.

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=ti+ba+ii+plus+professional In PDF document text
    • http://files.funinstruments1.com/uploads/1/3/1/3/131378990/64d7d20f0c.pdfIn PDF document text
    • http://files.bonnybunting.com/uploads/1/3/0/9/130969657/019cdd6d0b0351.pdfIn PDF document text
    • http://files.torontoacademyofacting.net/uploads/1/3/1/3/131398222/mikabijalatu_mujizugomuso.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/1/0430/4342/2359/files/nisopowawikofokexemawop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2299/2028/files/21424274512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0807/1576/files/12752872440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/ruvaxozisasazodub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/1273633397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/50836343387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4843/4840/files/tizib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2537/5125/files/jukuxawikefaxutaguwibubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2734/8121/files/innova_3100_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/33948971670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0657/4240/files/80493156949.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 7

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_off0000641b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641B 4984 bytes
SHA-256: ea465f5f78cda48cb1f3b39c3822054cd2ed9bcbd6ab57f0a81dc53358d59a93
font_01_sfnt_off00007516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7516 11020 bytes
SHA-256: 992c3d855e2f2718166e1a86fc995c92c494b754adbc94c360d3243abe511baf

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