Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0a433970008eb32…

MALICIOUS

PDF

47.2 KB Created: 2020-08-20 20:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 660c97ca291182437e5e9f131edf62ff SHA-1: fecd91bd1a95fc71adfefc5ca06279433443c61c SHA-256: a0a433970008eb323c921d782624071e80b55194c613f46aeb8190742a3117a9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF document contains a mass of external links, many of which point to a link farm hosted on Shopify. One of the embedded links, 'https://ttraff.cc/pify?keyword=bundesliga+table+stats+results+form+and+standings', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to lure the user into clicking the malicious link for further compromise.

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.cc/pify?keyword=bundesliga+table+stats+results+form+and+standings
    • http://files.kiefferphotography.com/uploads/1/3/2/7/132740378/fadet.pdf
    • http://files.jakimasfineart.com/uploads/1/3/0/7/130738894/7273173.pdf
    • http://files.samsaraholidayhouse.com/uploads/1/3/1/4/131438059/nasakagawog-sakiduzasozip-kugaxamo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3335/4659/files/74184392214.pdf
    • https://cdn.shopify.com/s/files/1/0437/5805/9671/files/ruroxipivuke.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/sawiwemolol.pdf
    • https://cdn.shopify.com/s/files/1/0436/0096/9896/files/story_elements_worksheets_2nd_grade.pdf
    • https://cdn.shopify.com/s/files/1/0438/9080/2856/files/ac_dc_hells_bells_guitar_tab.pdf
    • https://cdn.shopify.com/s/files/1/0432/2207/3506/files/25959449783.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/tivivofujidetilasuwikefu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6958/7104/files/fabimefu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6884/0341/files/67691270178.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5479/files/91678567143.pdf
    • https://cdn.shopify.com/s/files/1/0432/8567/6188/files/circular_motion_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5671/files/jubifigadozijaluni.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_off0000687c.bin
8da1ff79d28e800c4b0d32a16377df99676a6ae63c0f983a60dce578b4fb1fbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x687C 5416 bytes
font_01_sfnt_off00007ac6.bin
dd0c317c7e79499c3592bddc2bbb5e0f5afec0fd49f60caaec50a5a9d04d038a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC6 16764 bytes

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