Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c9ccd872ffd7b36…

MALICIOUS

PDF

52.5 KB Created: 2020-07-22 01:16:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5dc1d12ed88d6a8fac0386fc5c2d1cc SHA-1: 15f1cc24800294e41609da74e8835109c00f7969 SHA-256: 6c9ccd872ffd7b36aa85228c76658b9bcd88eaa79fdbe709a326ae303edbeffa
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external PDF files, a technique often used for SEO manipulation or to host malicious content. One of the embedded links points to a known malicious redirector, indicating a malicious intent to direct users to harmful sites. The ML classifier also strongly flagged this PDF as malicious.

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/wb?keyword=kelas%20coelenterata%20pdf
    • http://files.jacquelinereidphotography.com/uploads/1/3/1/3/131380305/9770550.pdf
    • http://files.christophertstout.com/uploads/1/3/0/9/130969645/nolaromotim.pdf
    • http://files.greggrfoster.com/uploads/1/3/2/6/132695651/mekisakud-sefexakeje-rikusuxajam-gomikikud.pdf
    • http://files.nvrha.org/uploads/1/3/0/8/130874627/9974083.pdf
    • http://files.anthonymichaelscatering.com/uploads/1/3/1/0/131069992/sibufo-gobiz-mebomebuwamil-gopena.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5679/0678/files/99825656146.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/67112685962.pdf
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/10861651299.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/74556815719.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12457093378.pdf
    • https://juzuzenevide.files.wordpress.com/2020/06/mekovu.pdf
    • https://kanatubovut.files.wordpress.com/2020/07/1391602002.pdf
    • https://limamav.files.wordpress.com/2020/06/tipexoxenebe.pdf
    • https://xodezepip.files.wordpress.com/2020/07/daxusuvasujositijabozega.pdf
    • https://cdn.shopify.com/s/files/1/0431/3425/5258/files/sinefageworowelu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/kagifi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/gawow.pdf
    • https://cdn.shopify.com/s/files/1/0434/2392/4376/files/32000006840.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fofigez.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000922b.bin
d14fd53720365f398fc9d630efa207c687c0c4447bc89ed3eefea5ebbd322acf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x922B 4856 bytes
font_01_sfnt_off0000a2b2.bin
7014d091cabc568a7607d2685935ad792f721fd0f80fee88ae28d9c04a487566		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2B2 9928 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.