Malicious PDF — malware analysis report

Static analysis result for SHA-256 895364e3945ea3f8…

MALICIOUS

PDF

49.2 KB Created: 2020-08-11 02:08:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb857b30610dbf56ce47847dcb499315 SHA-1: 77cc227ea1dcf4a57f2a85d316d96a336e7a975e SHA-256: 895364e3945ea3f8192d63a7c210b23f2286071cb4d521c455c8be1b7e7e8c71
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a link to a redirector, ttraff.cc, which is flagged as malicious. The document body and embedded links suggest a lure related to 'Dungeons & Dragons character sheets' to entice users to click the malicious link. The PDF also hosts a large number of links to other PDFs, likely for SEO manipulation to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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/pify?keyword=d+d+3.+5+character+sheet+pdf+interactive
    • http://files.southerncrossadvisors.net/uploads/1/3/0/7/130775998/83ea53.pdf
    • http://files.sailongrain.com/uploads/1/3/2/7/132740270/fisivonegu_vaxivasa_mekapojoxu.pdf
    • http://files.core-competence.co.uk/uploads/1/3/0/9/130969059/vifefebi.pdf
    • http://files.jjesmerarchitecture.com/uploads/1/3/1/6/131606186/zetuxavosufapoj_bewat_sojuzerogagipo_nedevurizojutak.pdf
    • http://files.coricosmeticsinc.com/uploads/1/3/1/3/131381046/kojitikemexiki_fakus_danakidofa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9426/9333/files/basanipobimoted.pdf
    • https://cdn.shopify.com/s/files/1/0438/4463/2738/files/81348737220.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/demesudixagivok.pdf
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/60184220464.pdf
    • https://cdn.shopify.com/s/files/1/0430/7710/7865/files/statistical_process_control_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0039/files/calligraphy_pen_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0440/6394/8950/files/60477704288.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/curso_de_espanhol_bsico.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/bowopesarevorede.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2255/files/embryology_in_quran.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/mabumuvamagoripudozexu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8148/9818/files/16732475825.pdf
    • https://cdn.shopify.com/s/files/1/0434/1566/6849/files/6080487424.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/
    • https://cdn.shopify.com/s/files/1/0434/1566/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008052.bin
163294eb1b020d47f29f12979337ea8b73cc3f382eefe35de0361bcc413ee288		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8052 5592 bytes
font_01_sfnt_off0000935d.bin
982b93e0f628c55575976445383769d20675975a0efc0c73bca247067d67adbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x935D 10720 bytes

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