Malicious PDF — malware analysis report

Static analysis result for SHA-256 469dd2d70f6e43f9…

MALICIOUS

PDF

34.8 KB Created: 2020-08-07 07:35:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc025ea65f701e428fc18389b772246a SHA-1: 956a9245ad274f591b89cd5f379af9d9051b7a7a SHA-256: 469dd2d70f6e43f931b4503ba3ed392cfe0d9ee2aea6887ed2620220f54171af
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a known malicious redirector. The document body text, though garbled, includes a URL that matches the redirector heuristic. This suggests the primary purpose is to lure users into clicking malicious links, potentially for SEO manipulation or to lead them to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=formulation+and+production+of+carbonated+soft+drinks+pdf
    • http://files.panpacificensemble.com/uploads/1/3/0/7/130739802/nasafagumasas.pdf
    • http://files.xosoft.eu/uploads/1/3/1/3/131398008/sujiruse.pdf
    • http://files.road2fullframe.com/uploads/1/3/0/8/130813643/27ad95b0273b95.pdf
    • http://files.mefgroup.org/uploads/1/3/1/4/131437233/tewogizizaw.pdf
    • http://linif.theidealorganization.com/uploads/1/3/0/7/130775320/30152d7.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/41841231275.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/peposorutap.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/71671710950.pdf
    • https://cdn.shopify.com/s/files/1/0433/9702/1854/files/jegaxejepewafitomutis.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/tulan.pdf
    • https://cdn.shopify.com/s/files/1/0432/3685/1874/files/kalnirnay_october_2020_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0431/6859/6117/files/jabunexoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/5018/9478/files/guvaseginonejominedigin.pdf
    • https://cdn.shopify.com/s/files/1/0440/6686/5317/files/37959644881.pdf
    • https://cdn.shopify.com/s/files/1/0433/6818/6015/files/64443206804.pdf
    • https://cdn.shopify.com/s/files/1/0444/6945/2967/files/adp_pay_stub_template.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ade.bin
ea928599cb029ae0e068240ef5d3c021e6ba9766967d4298ee3d0af7afe622bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x4ADE 5460 bytes
font_01_sfnt_off00005d55.bin
958f75ce0df235b636f74c3ec95206c67b1ffcb0971377d573ec0731949da011
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D55 9596 bytes