Malicious PDF — malware analysis report

Static analysis result for SHA-256 11b4c1fad29455ec…

MALICIOUS

PDF

43.9 KB Created: 2020-08-11 05:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e626abf1b486b9b81e0897b341a2574 SHA-1: d2f395c480e83693d3af7e51e5a44fb2cee9a119 SHA-256: 11b4c1fad29455ec7660f9784dffb9d1945e68b32949e7d61f016f24d682a031
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) designed to obscure the final destination. This indicates a phishing or malware distribution attempt, leveraging SEO tactics to appear legitimate. The ML classifier strongly supports the malicious nature of this PDF.

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=african+map+pdf In PDF document text
    • http://files.stdavidssociety.org/uploads/1/3/2/3/132303019/6694979.pdfIn PDF document text
    • http://rezofet.hotelsformeetings.com/uploads/1/3/1/8/131872225/c45b8.pdfIn PDF document text
    • http://jatuforom.archerfield.services/uploads/1/3/0/8/130873822/firifumudo.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/1/0433/0081/5006/files/aaron_sanchez_fangraphs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0184/6688/files/glock_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7148/8668/files/zifekovigafetit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/pigukuzovukog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6726/0576/files/avast_removal_tool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0966/2366/files/84981929781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0337/8839/files/fosofonuwokimar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/77851023816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1705/1048/files/clicker_heroes_redeem_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0720/3739/files/pewuvovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54344474436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5491/5993/files/35239156413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7221/6483/files/pfms_registration_form.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_off00006d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D23 5080 bytes
SHA-256: f5c52ad1b631351350f23376b644f64e3562aef5d7e2fe1c312701163d9e82cd
font_01_sfnt_off00007e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E44 10764 bytes
SHA-256: 7942ea32d9f7d83ac1d39bc39885bfb4ef38a75b7dc42cc6f2451d7d5f0c9204

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