Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d4f45f2b006b889…

MALICIOUS

PDF

43.8 KB Created: 2020-08-18 13:42:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3157736e045d45c8c4bcc62cb58d714f SHA-1: 0d30128c6727ad168ab779159eabea630b97ff25 SHA-256: 2d4f45f2b006b889722718a13efff3b12d3e62ef4c90eafcef253ec0e7185be8
128 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many hosted on Shopify, designed to appear as legitimate downloads. One prominent link, 'https://ttraff.cc/pify?keyword=android+9+emulator', is identified as a malicious redirector. The presence of a visual download button lure further supports the malicious intent of directing users to potentially harmful content.

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.cc/pify?keyword=android+9+emulator
    • http://files.mysummitagents.com/uploads/1/3/1/3/131380337/wumofesipu.pdf
    • http://vefekakok.kansasbusinesscouncil.com/uploads/1/3/1/1/131163930/9767637.pdf
    • https://cdn.shopify.com/s/files/1/0436/5726/5305/files/32329907204.pdf
    • https://cdn.shopify.com/s/files/1/0435/9713/6030/files/19206010000.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/junoruvetogovoxijajoru.pdf
    • https://cdn.shopify.com/s/files/1/0435/6587/5359/files/antiarrhythmic_drugs_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/5652/0616/files/esquire_uk_christmas_gift_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/2496/5019/files/53518048785.pdf
    • https://cdn.shopify.com/s/files/1/0434/1419/2285/files/jomuxanu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6908/6619/files/rosevuvonopefixosin.pdf
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/75456630350.pdf
    • https://cdn.shopify.com/s/files/1/0429/3017/6159/files/avalon_hill_kingmaker_rules.pdf
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/10031430316.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_off00006d8b.bin
d3940d1a5cbc29c759a3216647f467dd974ecb069fc4993f971f5a286d24a070		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8B 4940 bytes
font_01_sfnt_off00007e35.bin
69ee891b558bf1466a879ade36fc29466b4d9cb7d84ced2d80f5b774d6631f53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E35 10652 bytes

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