Malicious PDF — malware analysis report

Static analysis result for SHA-256 0716a55cbcd3e151…

MALICIOUS

PDF

43.6 KB Created: 2020-08-04 08:15:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f27ebde1395a5cd9e4b464e98561448 SHA-1: ae907a726578d9d995796926ede9fabeddfd129f SHA-256: 0716a55cbcd3e151d9191042edad7922ef4ebc885f7212479c362797a699f470
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, identified as a redirector for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to 'Schulferien 2020 baden w�rttemberg pdf', suggesting a lure to download a document. The presence of numerous external PDF links, many pointing to Shopify domains, further indicates a link farm designed to obscure the malicious redirector.

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=schulferien+2020+baden+w%25C3%25BCrttemberg+pdf In PDF document text
    • http://files.gruffcorn13.com/uploads/1/3/1/3/131381518/f27913e21b7067.pdfIn PDF document text
    • http://files.rattlesnakesafe.com/uploads/1/3/2/6/132682040/f3dcb.pdfIn PDF document text
    • http://files.gardeniacafeonline.com/uploads/1/3/0/7/130775659/6547816.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/1/0427/6705/7063/files/30687318208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73930450062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2806/7990/files/gulad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87967576867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8345/4871/files/31837639952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90296180399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/github_markdown_css.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18608783112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0983/files/59953656680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0020/9309/files/petapefutozimogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4014/4534/files/51210146856.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
🗂 Part of campaign: rattlesnakesafe.com 6 samples

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_off00006714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6714 6120 bytes
SHA-256: 88fe3a8c0198b095b7c36261699afcfe96cdc5c3abef067a6d920058ede6f559
font_01_sfnt_off00007b9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9A 11044 bytes
SHA-256: 4c3934b92266597f87eebd05ab7a4bcfdaea36fb0853ca9537672192bfb48928

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