Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa0d4b17303909f…

MALICIOUS

PDF

47.0 KB Created: 2020-08-01 19:52:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c120002d8a3fb2032d2533cd0224338 SHA-1: eb3c3c27b96200de74316525b4ff93aeac285b13 SHA-256: 0fa0d4b17303909f0c52378cda0edf350c93b4a8f6a936599ecfb5031258e241
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a redirector service known for malicious activity. The heuristic firings indicate it's a malicious redirector and part of a link farm, suggesting an attempt to drive traffic to potentially harmful sites. While no scripts were extracted, the PDF structure itself facilitates the redirection, likely as a phishing or malware distribution lure.

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.com/pify?keyword=set+upstream+to In PDF document text
    • http://files.aloeveraseatery.com/uploads/1/3/0/7/130775429/1391905.pdfIn PDF document text
    • http://files.coyotemusicstudio.com/uploads/1/3/0/8/130814118/tufiruwerakijij.pdfIn PDF document text
    • http://files.drferreras.com/uploads/1/3/0/8/130813757/aff61b1.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/1/0432/5618/5000/files/53414755424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/tezawibuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2745/5400/files/89600427204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7314/9859/files/lijawusisapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/51009371384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0786/8060/files/gukebigexijepodag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/46290863200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8550/files/fisetudapajunaxuralasaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/tixurukamuragegojow.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 5

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_off000079e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E3 5036 bytes
SHA-256: adbe2b0a125e9be36eb62644101d534d101f1146c2d4b60fffaaadee3ac04df4
font_01_sfnt_off00008ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE5 10680 bytes
SHA-256: d9361e9fb4f09d92bc115c17ed23cd8f9fe56dc6da830daa16fecf55210b570d

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