Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5b19596af81657f…

MALICIOUS

PDF

40.5 KB Created: 2020-07-10 19:14:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2dfe70953786071ec5f1a179d400a1af SHA-1: 565b1b980d9ba9907dc008d35c592009c34bffcb SHA-256: e5b19596af81657ff2b297587840ae01d817604cfbdad2bd3611c1f7e3220c19
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including a critical redirector link to 'ttraff.cc', suggesting a phishing or malware distribution attempt. The document body, though partially garbled, contains text related to PDF conversion and the malicious URL, reinforcing the lure. The presence of a large number of external PDF links indicates a link farm designed to manipulate search engine results or distribute 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.cc/wb?keyword=exportar%20pdf%20para%20word%20online%20gratis
    • http://files.rivermenrodandgunclub.com/uploads/1/3/2/3/132302973/nomegariwutok-wibiwu-visinatixubuj-sojimuta.pdf
    • http://files.foxxtrottin.com/uploads/1/3/0/8/130873736/1be44c7ae11ec.pdf
    • http://files.sincerelyemma.com/uploads/1/3/1/1/131163514/xuduvep.pdf
    • http://files.loripowerwriter.com/uploads/1/3/1/4/131438310/f22ad0.pdf
    • http://files.seizediem.com/uploads/1/3/1/4/131438741/vewim_gifesimefipotu.pdf
    • http://files.dashingdoodlesnc.com/uploads/1/3/1/8/131857193/d1e8aaed1c.pdf
    • http://files.mindfulserenityonline.com/uploads/1/3/0/8/130874629/pezozulaleku.pdf
    • http://files.naanicraftsco.com/uploads/1/3/1/4/131438231/dufemenuwulalefaken.pdf
    • http://files.heavyrent.nl/uploads/1/3/1/3/131398591/duwewufu-vexatanakoloju-getonebid-dapazawoketu.pdf
    • http://files.speedybraids.com/uploads/1/3/1/1/131164314/baduxo.pdf
    • http://files.newlandfilms.co.uk/uploads/1/3/0/8/130874468/7829196.pdf
    • https://zamosofig375835916.files.wordpress.com/2020/07/nexipixedulomedowap.pdf
    • https://kowumikov.files.wordpress.com/2020/07/bijovonazabow.pdf
    • https://kaxavuwomu.files.wordpress.com/2020/07/sukosaxisuwazibax.pdf
    • https://vedirozevu.files.wordpress.com/2020/06/34284720358.pdf
    • https://rumibut.files.wordpress.com/2020/06/bizuzemuxugiselaterotuw.pdf
    • https://robagifed922139588.files.wordpress.com/2020/07/387514385.pdf
    • https://womitoguv321508366.files.wordpress.com/2020/07/37906656938.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/36263263021.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wuwikeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.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_off000060d2.bin
a4ac85af36e1983adc0a6f579a68d4b95c093569b93ddf610fcdf69929ecdbe5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D2 5116 bytes
font_01_sfnt_off0000725f.bin
061fcdd9f66e0e60ad849b9586ecf639af1618634273cba78f80c64afc3e7bc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x725F 9916 bytes

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