Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dc7d5f11cb01d1d…

MALICIOUS

PDF

46.7 KB Created: 2020-08-20 21:40:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86060c197fca20699a20e19c138e9d9c SHA-1: 8fe2c128cedfed633d6394d8096c1edb26b4238e SHA-256: 4dc7d5f11cb01d1da38b96a12615849fc4a1dc7eac8c2be8ddd2883bfdd5bc3a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to manipulate search engine results, with a primary malicious redirector URL. The document body text, though garbled, contains the same song title used in the malicious URL, suggesting a lure to trick users into clicking. The heuristic firings confirm the presence of malicious redirector links and a link farm within the PDF structure. No scripts were extracted from this sample.

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=chogada+tara+chabila+tara+song++pagalworld In PDF document text
    • http://files.packardautorepairs.com/uploads/1/3/1/1/131163740/nugubajaginir-sewaleduli.pdfIn PDF document text
    • http://files.mainewest.org/uploads/1/3/1/8/131856358/semevabi.pdfIn PDF document text
    • http://files.yummyeatsdesserts.com/uploads/1/3/0/7/130776826/luwesigogixera_pomukaz_viradeletatu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mozesuseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7122/3446/files/97562912744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2074/5893/files/45997961454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9705/4631/files/saifonline._saif._com_myclaim_documents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9100/8418/files/livawibokagasolet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2285/9944/files/68236419157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7597/4821/files/online_java_editor_formatter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/sarixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/49005790245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5817/3854/files/extract_vmdk_from_ova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9277/8912/files/91945033022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1189/7504/files/rubemamuvopapus.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 3

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_off00005df2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF2 5472 bytes
SHA-256: 5909afcaefdfb9b29f865ef47c142fdf9b044a56216bb4a6786ddeafb8a08d6b
font_01_sfnt_off00007095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7095 13980 bytes
SHA-256: 4f69720e86faf3ffeffd463d17791467fd901ab427b6dd8cd77c07e0e3f0f54f
font_02_sfnt_off00009d41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D41 4608 bytes
SHA-256: 72247769042f39f43a8023ed2b3e7bc81224fb89afc25c3ccddd9dded3199151

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