Malicious PDF — malware analysis report

Static analysis result for SHA-256 599043179de4d6bb…

MALICIOUS

PDF

45.8 KB Created: 2020-07-21 03:59:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfffcf48e3733c865742f5793b271ddf SHA-1: 6f7ab4483a630f9c26fc3d05092544516dc88191 SHA-256: 599043179de4d6bb15adaf462440f0ca553f41c417d659095f448a5e7706e0d3
128 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 critical heuristic indicating it's a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=download%20read%20only%20pdf%20online'. It also exhibits characteristics of a PDF link farm, with numerous links hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute malicious content. The presence of a 'download' call-to-action phrase further supports the lure.

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/wb?keyword=download%20read%20only%20pdf%20online
    • http://files.chapelatmercer.com/uploads/1/3/1/3/131383510/vapikiwebodol.pdf
    • http://files.support.famhealth.com/uploads/1/3/1/4/131437740/3357936.pdf
    • http://files.sage-and-selah-organics.com/uploads/1/3/1/6/131637218/bewadi.pdf
    • http://files.ridethai.com/uploads/1/3/1/8/131856883/lexigutivozizat_xomonobajuxu.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/waratixamesixoduge.pdf
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/91757212174.pdf
    • https://cdn.shopify.com/s/files/1/0432/5123/7022/files/95910026560.pdf
    • https://cdn.shopify.com/s/files/1/0438/3096/8480/files/75381771285.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83390791822.pdf
    • https://texiduga.files.wordpress.com/2020/07/sumitesa.pdf
    • https://wajerenedage.files.wordpress.com/2020/07/gakegopefetuxevemotebim.pdf
    • https://wunufapozo.files.wordpress.com/2020/07/xeburebamifapadokora.pdf
    • https://cdn.shopify.com/s/files/1/0434/4135/6950/files/danojukejekedalujuxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/51885796803.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/getidezusonajimanenagazu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/56817526459.pdf
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/67358560112.pdf
    • https://cdn.shopify.com/s/files/1/0432/8439/8236/files/49861883717.pdf
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/zunijafavubo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2730/7416/files/67290382946.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/1/0433/0687/708

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007665.bin
caa9849394192e0c14f2238df78c2c1bc37e14725ec1a431c7fa8d791eb1ef26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7665 4756 bytes
font_01_sfnt_off000086ad.bin
7c817a8f91fcb2a41d79774fb97ed7b34a30dd2ccac799fb9d51e0f6a5314da7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86AD 10548 bytes

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