Malicious PDF — malware analysis report

Static analysis result for SHA-256 79cfe8fbc2040edf…

MALICIOUS

PDF

43.5 KB Created: 2020-08-06 08:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ac3c0799fb9e8b83192515e69995878 SHA-1: f232677edba41854d86e5ba2ba45bf111ae57e8a SHA-256: 79cfe8fbc2040edf8c435ed6126058263d017c2b208d313823f9fb0687840b07
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 (ttraff.cc) known for malicious activity. The document body, though heavily obfuscated, contains URLs that mimic PDF downloads, suggesting a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the presence of redirector links points to an attempt to lead the user to malicious content.

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.cc/pify?keyword=budding+in+bacteria+pdf In PDF document text
    • http://files.sunningdalehomedesign.com/uploads/1/3/2/8/132814958/841751.pdfIn PDF document text
    • http://files.graffitiwgratitude.com/uploads/1/3/0/7/130738814/808e7b1556b9ad.pdfIn PDF document text
    • http://files.lkoc.org/uploads/1/3/1/3/131383497/bofepowoj.pdfIn PDF document text
    • http://files.gogginslonestarfarms.com/uploads/1/3/0/8/130814601/xiderudokomo.pdfIn PDF document text
    • http://files.murrayparkcondos.com/uploads/1/3/0/8/130874086/4651591.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/1/0432/0205/2257/files/65911699625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9877/6487/files/30010080551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4326/5434/files/96216980803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/critical_theory_sociology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rirolor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/8032323694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9765/7248/files/nutrition_care_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/25684162813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/tosusikiradosogedevamudoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/6208298817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/825163748.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 8

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_off00006b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8F 5304 bytes
SHA-256: b408a55b362b7633d4cc5b8f89f9e31c3aab70fcbf8d7997a464361238ff05ba
font_01_sfnt_off00007dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAD 10280 bytes
SHA-256: 4456ea61a5e7e3edc05eb798fd86156f2edb62d6836db13cf3997574fbd3f1c5

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