Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae4950d915ffe0c5…

MALICIOUS

PDF

49.6 KB Created: 2020-08-15 04:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83cb8db0809353ab0cb0d6d1875a2f34 SHA-1: d29cb04cd60bfa19bfec196c8449d42433757898 SHA-256: ae4950d915ffe0c5bed44b21f7a13c8f8eed8b6e18f326bdcf3dd57ea15d89db
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary heuristic indicates that the document links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggered the redirector heuristic, suggesting a lure to a malicious site.

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/wb?keyword=biografia%20de%20marjory%20gordon%20pdf In PDF document text
    • http://files.tableandtea.net/uploads/1/3/1/0/131069886/58b53c628b7c1.pdfIn PDF document text
    • http://files.dysfunctionalbmx.com/uploads/1/3/2/6/132681150/fepuxusibifetolupu.pdfIn PDF document text
    • http://files.kurtweissgerber.com/uploads/1/3/1/0/131069819/gibapalarifirose.pdfIn PDF document text
    • http://files.otiumlounge.com/uploads/1/3/1/6/131637177/lebekitexeba.pdfIn PDF document text
    • http://jaweporaz.dukesfootball.com/uploads/1/3/2/6/132695471/kagowuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/juzapuwomonitogapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5597/2501/files/neural_networks_and_deep_learning_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4204/6103/files/rewilivowub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2887/9272/files/letinulemekorubup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1228/2789/files/15478831909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/bamizokemuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4479/7600/files/dazaneronijumovubutozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/80914972192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3499/9975/files/84839527223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/munekabogepipepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/83784258705.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D5 5088 bytes
SHA-256: 5b6108c08b3b647ab19e9b363cfecd4d2e22dde84e778b7a7094a3f84538f121
font_01_sfnt_off0000850b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x850B 11124 bytes
SHA-256: 398cb9a5fe6f4a9df3f55db737f0c06382f6eec05c1c8cce2793ae6aa61b7c05
font_02_sfnt_off0000a940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA940 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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