Malicious PDF — malware analysis report

Static analysis result for SHA-256 98c18929d0fef3f9…

MALICIOUS

PDF

49.4 KB Created: 2020-09-01 14:21:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce3dc486ce18063874944798cd67a41c SHA-1: aab8fd34b951f72a90e5e87d63f05897b5706102 SHA-256: 98c18929d0fef3f9f9acdcf89a2e7f5e840409c32b7bbbf209ba20a51203482a
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits characteristics of a link farm, with numerous links to PDFs hosted on Shopify. The presence of a 'download button' heuristic suggests a social engineering lure to trick users into clicking the malicious link. No scripts were extracted, but the primary attack vector appears to be redirection to malicious infrastructure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=minions+movie+free++480p
    • https://cdn.shopify.com/s/files/1/0431/8996/0865/files/22968021944.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41732402988.pdf
    • https://cdn.shopify.com/s/files/1/0434/7396/1126/files/sotupawalutekekomidawero.pdf
    • https://cdn.shopify.com/s/files/1/0431/7996/6628/files/14870231176.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/zezikimogolojatevasof.pdf
    • https://cdn.shopify.com/s/files/1/0438/4086/4421/files/heart_rate_and_exercise_lab_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/best_movies_dual_audio.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/baxebopumeruda.pdf
    • https://cdn.shopify.com/s/files/1/0428/2816/9382/files/coordinate_geometry_formulas_for_jee_mains.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/20156773843.pdf
    • https://cdn.shopify.com/s/files/1/0433/6720/2974/files/81518898840.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6774/files/historia_del_nacionalismo_catalan.pdf
    • https://cdn.shopify.com/s/files/1/0434/2009/0517/files/bifaxodegotevavulo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eca.bin
9046e0cf0529a358fc589c974adfb0697632301bfda6fd2703f040e81a6b5562
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECA 5004 bytes
font_01_sfnt_off00006fb1.bin
bb219fc95f53d45f55048c907c83e50ba31086702ea1ef8545cfed656d39828f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB1 10444 bytes
font_02_sfnt_off00009384.bin
dcc3ecb39443cf178e73f766785d59538b98a3f51d66c7f857f9c4c6f6adf6a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x9384 16576 bytes
font_03_sfnt_off0000aa34.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA34 4324 bytes