Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee436459d319a167…

MALICIOUS

PDF

88.2 KB Created: 2020-08-06 23:00:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76c60530ac630243c263d750c0ea1207 SHA-1: a53321450015c42643ceceb938e4d1614d7e6fa1 SHA-256: ee436459d319a167bb04634c84bf9d1bdab497fc3b801f640d1beb37ada1531a
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL, 'https://ttraff.com/pify?keyword=gregorian+calendar+2020+pdf', is presented as a lure for a calendar download. The document body, though heavily obfuscated, contains this URL, reinforcing the phishing attempt. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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=gregorian+calendar+2020+pdf
    • http://files.rockabuybaby.shop/uploads/1/3/2/6/132695244/ed7098c291844c.pdf
    • http://files.dellhpc.org/uploads/1/3/2/6/132695569/5972891.pdf
    • http://mefaviki.youthening.org/uploads/1/3/1/3/131398455/d6b8dcf94d75.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/govikovubatilikamupag.pdf
    • https://cdn.shopify.com/s/files/1/0437/8840/2839/files/6600775198.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/56263421097.pdf
    • https://cdn.shopify.com/s/files/1/0432/4425/7442/files/limuwuluxadasesu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8475/9711/files/perilaku_hedonisme.pdf
    • https://cdn.shopify.com/s/files/1/0433/8630/6710/files/47554451820.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/made_in_america_1993.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/xexemuxobajekinodote.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/power_amplifier_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81579197248.pdf
    • https://cdn.shopify.com/s/files/1/0435/5935/4517/files/war_craft_3_battle_chest.pdf
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/72822541206.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecd6.bin
36fa25da7834e74dc25d5eddb72a1cd8c95077878720d0e8b5618dc92abccc86		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECD6 6336 bytes
font_01_sfnt_off00010280.bin
8b555671d173a1b12eb5d39689568ec56c14625b992b2c83ac53cb9e1c04c21d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10280 5452 bytes
font_02_sfnt_off0001151b.bin
3e8f45285765e4e35699681251774b40de7632426a63b026eeb57715f4d0826f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1151B 11580 bytes
font_03_sfnt_off00013b78.bin
f1994bf8224282b83522b6c5cfef24ae82e20f65362d0796bf49a35e69690d81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B78 16852 bytes

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