Malicious PDF — malware analysis report

Static analysis result for SHA-256 253c63e0a330d851…

MALICIOUS

PDF

42.2 KB Created: 2020-08-17 04:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 944cb7adf8240a9cf4d85ee5d5369926 SHA-1: b1f26dabf07aa5177f2ec00180b13033d1379941 SHA-256: 253c63e0a330d8512860039ca50ed201d2b0de856c2436e37350e68ecba4e3af
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of a link farm and the redirector suggest an attempt to drive traffic to malicious sites, likely for phishing or malware distribution. 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=video+basara+the+movie+sub+indo
    • http://fewex.hammellwinealliance.com/uploads/1/3/0/8/130813710/jesano_ziwegulu_didagima.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8656/files/64740711147.pdf
    • https://cdn.shopify.com/s/files/1/0435/7737/6936/files/simple_present_tense_adverbs_of_frequency_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/bamitukerofalusutokej.pdf
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/40593559718.pdf
    • https://cdn.shopify.com/s/files/1/0437/9059/8305/files/73257019885.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6578/files/install_python_mac.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/waltz_for_debby_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0434/5587/3190/files/accounting_theory_and_practice_glautier.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/23268810510.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2557/files/55765541223.pdf
    • https://cdn.shopify.com/s/files/1/0438/4204/4066/files/sifebexusabuxogagofuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/9114/0509/files/86600629036.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_off000055d3.bin
3cf7467ca8b76b0198a0597ff4ee7fc5a6940ac0ab2c6282e20a750f72b4299b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55D3 4896 bytes
font_01_sfnt_off0000671d.bin
c89526c8336f69e3ececc5cb2f868cf96bda6dacd37dbde09a205ef48ee30371		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671D 5200 bytes
font_02_sfnt_off000078a7.bin
ad02ce91687e128d19f9f2062e6b1cab9d88e88bd6a03218457b0255befb1c1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A7 10296 bytes

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