Malicious PDF — malware analysis report

Static analysis result for SHA-256 51e0c84bb21edc05…

MALICIOUS

PDF

41.8 KB Created: 2020-08-01 07:09:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49a0c4eacb5f2042872fce165c294360 SHA-1: 03db3f7b11f5d21fae1f018ff0a1076cbb42ffbd SHA-256: 51e0c84bb21edc05959a9213a6f1bf85856924505b36fb0321ea7d9cde77f35d
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many hosted on Shopify, designed to create a link farm. One prominent link redirects to `https://ttraff.com/pify?keyword=phpstorm+license+server`, which is a known malicious redirector. This suggests the document is a lure to drive traffic to malicious infrastructure, likely for malware distribution or phishing. No scripts were extracted, limiting the analysis of direct payload execution.

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.com/pify?keyword=phpstorm+license+server
    • http://files.thameswardcommunityassociation.com/uploads/1/3/1/6/131637853/garegenikazufar_purotubuxegare_jazixibiw_weligufilo.pdf
    • http://files.psfcfiji.org/uploads/1/3/1/4/131437283/dutuxopazaf.pdf
    • http://files.goodfinds1.com/uploads/1/3/1/3/131384407/9168677.pdf
    • https://cdn.shopify.com/s/files/1/0435/4169/2570/files/xolotepivadifaniro.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/xipekerobugoruvovare.pdf
    • https://cdn.shopify.com/s/files/1/0431/0011/0999/files/23061482645.pdf
    • https://cdn.shopify.com/s/files/1/0431/2426/1026/files/8942704131.pdf
    • https://cdn.shopify.com/s/files/1/0427/9966/1223/files/6701347266.pdf
    • https://cdn.shopify.com/s/files/1/0429/0225/7823/files/62381861407.pdf
    • https://cdn.shopify.com/s/files/1/0435/4893/4295/files/ffxiv_leveling_guide_1-_50.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/kekisakudomu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d5c.bin
8754e9942145ad49698f2900c0c574aafb15007859c33ccd3987f992c6f750b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5C 5024 bytes
font_01_sfnt_off00006e4b.bin
0cdbcdb77f697d125efbe5bb4805316d67a7ce361b0a24fbb7756eff92436db7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4B 1952 bytes
font_02_sfnt_off000077ab.bin
e6b3bed22b2b74a531a93e509c2e9f1aec9c533a63204c3b09b5a80b602bdfa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77AB 10256 bytes

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