Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4fbef951d313aa5…

MALICIOUS

PDF

49.1 KB Created: 2020-08-12 18:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 728cb00047b1ce8017ad1d603f65d235 SHA-1: e4e4f986ef53c52704f509d6a4750d0fab11af1d SHA-256: b4fbef951d313aa5b8fd3a3609e88719315d7269e565fff1484855f68db4528c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of outbound links, likely for SEO manipulation or to host further malicious content. The embedded URL https://ttraff.ru/pify?keyword=medical+science+liaison+job+description+pdf is the primary indicator of malicious redirection, likely leading to a phishing or malware download page. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=medical+science+liaison+job+description+pdf
    • http://kimodep.upwardcr.com/uploads/1/3/1/4/131437130/zoxaxodufajap_purabijozojugi.pdf
    • http://files.secondstoryhoney.com/uploads/1/3/1/0/131069766/7c5da.pdf
    • http://files.oneactioncalendar.org/uploads/1/3/1/3/131383959/5887307.pdf
    • http://files.adeg.us/uploads/1/3/1/6/131606594/gajamapoketomakazan.pdf
    • http://zapopal.gphsmanufacturing.org/uploads/1/3/1/4/131437462/duruvofep_gobuguteradonak_kekomosa_nugagakimivu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6271/3754/files/fugibetorudaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/5374/3270/files/jikizexo.pdf
    • https://cdn.shopify.com/s/files/1/0436/0830/9923/files/bamidezasamamumonugege.pdf
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/hbase-_site._xml.pdf
    • https://cdn.shopify.com/s/files/1/0438/4145/4240/files/xorajegobifowefedeb.pdf
    • https://cdn.shopify.com/s/files/1/0437/1959/0040/files/mapping_cardinalities_in_dbms.pdf
    • https://cdn.shopify.com/s/files/1/0433/0163/4201/files/61542333332.pdf
    • https://cdn.shopify.com/s/files/1/0437/8217/6917/files/cardiopulmonary_resuscitation_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/kuwura.pdf
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/olympic_sports_list.pdf
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/38358989406.pdf
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/grade_12_biology_textbook_zambia_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/govikovubatilikamupag.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_off0000808d.bin
185e2f9f859295c0cb6001f1e4c10e9d82c8d1456268fa48eff64526ab936d6d
pdf-font-stream PDF embedded font (sfnt) at offset 0x808D 5372 bytes
font_01_sfnt_off000092d7.bin
638dd411f1cce7d75f8c8aa1d863ea9bf126fc49c5f9dde2bd5c9afdc7be14cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x92D7 10492 bytes