Malicious PDF — malware analysis report

Static analysis result for SHA-256 300fbb422624d3a7…

MALICIOUS

PDF

47.9 KB Created: 2020-07-24 03:17:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d3c884c92ceb2092944d8bacb9a038d SHA-1: 08a5455ec4cef5a258db83e598168e6051f1377d SHA-256: 300fbb422624d3a7c24f4fa497e5f2a3e3ad5e6e5a2b2b2e821e9128520cd7b2
128 Risk Score

Malware Insights

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

The PDF file contains multiple heuristics indicating malicious intent, specifically a link to a known malicious redirector and a large number of external PDF links, suggesting a link farm or distribution mechanism. The presence of a 'download button' heuristic further supports a lure-based attack. While no scripts were extracted, the PDF structure and linked URLs strongly suggest a phishing or malware distribution attempt.

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/pify?keyword=zombie+catchers+apk+indir+hile
    • http://files.downundermigration.com/uploads/1/3/2/6/132695829/7663795.pdf
    • http://files.pancakeeducation.com/uploads/1/3/0/8/130814430/2745948.pdf
    • http://files.brosforstevenash.com/uploads/1/3/2/3/132302992/856a997.pdf
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/megupebivatewaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/2430/2759/files/vopivoletigip.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/86475413540.pdf
    • https://cdn.shopify.com/s/files/1/0434/1638/7733/files/zuvezazolapepumegiduxil.pdf
    • https://cdn.shopify.com/s/files/1/0433/5042/5750/files/85473140821.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wesani.pdf
    • https://cdn.shopify.com/s/files/1/0436/9183/5545/files/78700425701.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/27796364937.pdf
    • https://cdn.shopify.com/s/files/1/0434/1058/7800/files/15531386924.pdf
    • https://cdn.shopify.com/s/files/1/0433/9702/1861/files/zegenamodozopoxil.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_off00007e48.bin
b4abb991dd92e3c77fa5edfb288673093931c5b1db5ec030d223103a189f34a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E48 5260 bytes
font_01_sfnt_off00008ff6.bin
66efd8e8093b22e3952fec98757636e6be5f9ff5fad628a0bbbe820518f835a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF6 10240 bytes

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