Malicious PDF — malware analysis report

Static analysis result for SHA-256 20bc3914ed5f7d5c…

MALICIOUS

PDF

40.9 KB Created: 2020-08-25 00:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c19c293456bdca3843ded38f54e24e3 SHA-1: 1f575fe31f68ba15f82f9658cb17cc2d7ecee646 SHA-256: 20bc3914ed5f7d5cf8a3381a368482d9b155cd30ab2b7e2c03ad0c9fa64f8abb
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing indicating a PDF link farm. One of the primary links, 'https://ttraff.cc/pify?keyword=ausgleichsgerade+excel+formel', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other links pointing to PDF files hosted on cdn.shopify.com and other domains. The presence of a malicious redirector and a large number of external links suggests an attempt to lure users to malicious sites or to manipulate search engine rankings.

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=ausgleichsgerade+excel+formel In PDF document text
    • http://fasozefas.oragontravelandtours.com/uploads/1/3/0/9/130968973/rivuzilorite.pdfIn PDF document text
    • http://buxajow.marianneshows.com/uploads/1/3/0/8/130873822/6210786.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/1/0431/0014/3777/files/apache_hive_cookbook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/8961/1176/files/lista_adjetivos_calificativos_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9567/8359/files/49465370879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/57384883276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5061/4429/files/40184036752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1678/8890/files/gafawufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/26201979714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6903/1078/files/96000960675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3855/3765/files/bivikofawiwulo.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_off0000604b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604B 5492 bytes
SHA-256: 5b97ef4850aa62ef1f22decb05b54b3878735d33e20d924fc6161f7c1c4f1202
font_01_sfnt_off000072cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CC 10968 bytes
SHA-256: 54953b8b4591d53dea1d78c4ed0db8f6dc3b4f09f9c7c944f26cf02d8c4d1536

Open this report in the interactive analyzer, or submit your own file for analysis.