Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d56911881f615a2…

MALICIOUS

PDF

40.1 KB Created: 2020-08-10 11:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ad9d89b52c6195ad26e34190dee44e2 SHA-1: 271369c3d8785c7986be3253c7939ee71b4e63c3 SHA-256: 7d56911881f615a27d9cccd2678f5d2ce8a5c67152a92999c6329fe965f2e03b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links, many of which point to a redirector service (ttraff.cc) identified as malicious. The document body, though heavily obfuscated, contains text related to PDF manipulation and includes the malicious redirector URL. This suggests a phishing or scam attempt, likely using the 'combine PDF pages' lure to trick users into clicking the malicious link.

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=associer+plusieurs+pages+pdf In PDF document text
    • http://files.ricepaperdesigns.com/uploads/1/3/1/4/131438044/dobebogobev_nonopir_potiji_dufelil.pdfIn PDF document text
    • http://files.tambowthewombat.com/uploads/1/3/0/8/130874485/5022749.pdfIn PDF document text
    • http://lusugaxo.theoaksmith.com/uploads/1/3/1/3/131383483/7e0764c0d231.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/1/0432/7741/8656/files/52681448401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6563/8050/files/simplesmente_acontece_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5355/5624/files/blickle_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8385/7053/files/network_technician_job_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5736/4638/files/wufurufimajifetod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9847/2605/files/506_assignment_answer_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3902/3526/files/54871160681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/monanizasora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/40352754902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5864/1573/files/danny_phantom_episode_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5368/4638/files/87261758263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1184/9890/files/56407527028.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 3

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_off00005d88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D88 5312 bytes
SHA-256: 91a15e7009359986b721c9ffe54ca5f359c2f26a01d89f264360c1458d46291c
font_01_sfnt_off00006fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA9 11352 bytes
SHA-256: 2d4b10ce075ae0253d981d0b58453279abd370467d40b7137caaa0f979548468

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