Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3c39b34ee9e4f66…

MALICIOUS

PDF

47.3 KB Created: 2020-08-07 08:26:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96e6827e7987d7c548d802d168383e7d SHA-1: e62648cba3703f4dbb47890f0bc8052a1f7acb4e SHA-256: d3c39b34ee9e4f664dcb4b1e26037789f3557ca925dbd7dd8771fe647f815020
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to external resources, a technique often used for SEO poisoning or redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by the heuristic.

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=agama+islam+sebagai+agama+rasmi+pdf In PDF document text
    • http://files.sheng.studio/uploads/1/3/2/3/132302787/5644156.pdfIn PDF document text
    • http://files.fonkgerdi.com/uploads/1/3/1/8/131856860/batak-fupibugural-xezijoli-zerosemoji.pdfIn PDF document text
    • http://files.giniasgems.com/uploads/1/3/0/7/130775707/jenezin.pdfIn PDF document text
    • http://files.thebellevie.com/uploads/1/3/2/6/132682210/lerej.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/1/0437/6359/7466/files/94660335105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6147/7527/files/macys_redding_ca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6967/files/nexerozorifijel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2738/1920/files/zijojopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/73353907722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84302935330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7346/0641/files/43540913456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6981/7511/files/71605404095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/accountancy_class_11_ts_grewal.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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
stream_005_off000096a8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x96A8 17512 bytes
SHA-256: 19746996873e87f4b718912392f8837823d34348d144580915d0c927b27c3b7d
font_00_sfnt_off000061ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61EC 5492 bytes
SHA-256: 27aaed448bb1d3d44a752ca860823b6e17e66c51ed35668cccae491af21865d9
font_01_sfnt_off00007480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7480 9908 bytes
SHA-256: ba291f06074e0b5643e7390370ff40d2ba0b1c64678129b277ad5e91521521d7

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