Malicious PDF — malware analysis report

Static analysis result for SHA-256 318a985afa7b5e06…

MALICIOUS

PDF

43.1 KB Created: 2020-08-17 16:24:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f00c2421769e6da3a086683d3c830070 SHA-1: 6ccc7fcedfcd089e591f8991a9ebc84f30356652 SHA-256: 318a985afa7b5e068505b8f22781f56fe8713ae1669f43ce2ad90d49e2429fa7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document exhibits characteristics of a link farm, embedding a large number of external links, with one specifically identified as a malicious redirector. The ML classifier strongly indicated maliciousness, and the presence of numerous links, including one pointing to `ttraff.ru`, suggests a phishing or spam distribution scheme. The document body contains garbled text along with the malicious URL, indicating a likely attempt to obscure the malicious intent.

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=manualidades+con+tapones+de+botellas+de+agua In PDF document text
    • http://files.dollupwithteacups.com/uploads/1/3/1/8/131857421/53a986c035c34.pdfIn PDF document text
    • http://files.montananazarene.org/uploads/1/3/0/9/130968950/rafofezodakibosi.pdfIn PDF document text
    • http://gaworitek.metropolitaneprep.com/uploads/1/3/0/7/130776728/kenuwe.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/1/0435/3199/3242/files/gotofunumag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7629/5592/files/33508599822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4356/1373/files/feelings_worksheet_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3844/0598/files/55027308288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1078/8261/files/conversion_anglais_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/5090917243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/55554310106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/7899/6383/files/bangla_book_file_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4995/7029/files/78676287745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5370/2550/files/gaguriloluvuzajox.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 6

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_off000069b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B9 5292 bytes
SHA-256: 3e78f44e13fd864f3b870fc40f3a37266e258e83e2e45b302d86a7faa49735f3
font_01_sfnt_off00007bc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC0 10436 bytes
SHA-256: 8dbdff6cd1c8c31e0d0f70895ff65160718dc0f1bc43afd64c634e90c6a1a92e

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