Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec0bcca854071dd9…

MALICIOUS

PDF

47.1 KB Created: 2020-10-07 15:29:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d53bc1ad9763294e55641b8216e21152 SHA-1: 7419b48988f00c02ae4fe7ddff81d6170851bfe1 SHA-256: ec0bcca854071dd98620f4e3d8d1377b5280f440c4ad7252e8598eb662711b92
194 Risk Score

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.club/pify?keyword=1kg+to+oz In PDF document text
    • http://files.businesstestsite.com/uploads/1/3/1/4/131407227/pakopefi.pdfIn PDF document text
    • http://seziro.viciwreford-sinnott.com/uploads/1/3/2/3/132302780/jekaronufapobozojog.pdfIn PDF document text
    • http://voraxezus.victorjorge.net/uploads/1/3/0/7/130776418/bopuxilidarodid-foseden-fagagipovixepu.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/1/0431/7400/2837/files/richard_chilton_english_estate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6480/2982/files/tefaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29da5db2-4bd5-4455-a20a-53c4ec392da3/jixekidelifasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6c66151-40b2-48d6-a73a-f2eec9648ad1/25563442147.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5875a33-8d2e-4c98-a448-d03530ff4848/93466905047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11a89daf-d18f-4c8b-af35-6944c2caa433/jasipesavimabepazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8088/4119/files/91022907110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7036/9175/files/the_enemy_series_higson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5131/4083/files/45625756322.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 4

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_off000067eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67EB 4408 bytes
SHA-256: 66d7f611784dcc9b068c6ffbf7cf9eb10873e5db8dbeff5bf6c5140846e4b24e
font_01_sfnt_off00007713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7713 10356 bytes
SHA-256: 3a5a5260ab7c50284bfc9e7dfe81d3a1f465f8e049add8cfc5f1e289a592bcfd
font_02_sfnt_off00009ac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC1 16216 bytes
SHA-256: 70f40d70559aacc935f14be6aa78542955531c8ec73b35d0bb8c03e7c63a2f02

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