Malicious PDF — malware analysis report

Static analysis result for SHA-256 efd0beea83b03735…

MALICIOUS

PDF

57.7 KB Created: 2020-08-29 21:39:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5004532887bb8c56bab3c54915bd9060 SHA-1: 7bbffe522e17fed89df76c5f5116879eeb94a6de SHA-256: efd0beea83b03735f98b5cb413d167ee6389fa80accfc4a45acbc6c9ce4e27b6
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains the same URL. The presence of a link farm within the PDF further suggests malicious intent, aiming to increase the visibility of the malicious link.

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/wix?keyword=gw2+friend+list
    • https://cdn.shopify.com/s/files/1/0438/6134/4406/files/xutigonivun.pdf
    • https://cdn.shopify.com/s/files/1/0433/5271/9515/files/86304486095.pdf
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/fuwofapowatezejakanab.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2445/files/sowene.pdf
    • https://cdn.shopify.com/s/files/1/0430/4325/8522/files/67316021435.pdf
    • https://cdn.shopify.com/s/files/1/0434/4610/8312/files/three_days_grace_riot_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/9393/4748/files/oxidative_stress_and_diabetes.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/lebigivub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/miveguxuxububepevomozit.pdf
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/vabonogagipusoxuwijaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/8135/1839/files/rangitaranga_english_subtitle_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1515/9458/files/file_ke_excel.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2859/files/93363834305.pdf
    • https://cdn.shopify.com/s/files/1/0429/5737/3589/files/design_of_astable_multivibrator_using_555_timer.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1400/files/98118262571.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_off0000a592.bin
f3d60a1dde7adca10c39b99d25243db2f57e83ccf8954b9510387cbbba84078f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA592 4944 bytes
font_01_sfnt_off0000b68a.bin
cb79ab0c6a643a81e10348145499090fb9a6a12f416caa9e3125404d4783c573		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB68A 10420 bytes

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