Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fff6bd3de09a5a0…

MALICIOUS

PDF

65.2 KB Created: 2020-08-12 07:19:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 700055023b63a47bdadaad449c40b89d SHA-1: 40ef1ae334ec11c2bf070a4d7970df97c8ec7a6f SHA-256: 4fff6bd3de09a5a065dc5a277a0c924e4b054d7b46536f35bb0e7ba5230c6768
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wb?keyword=electrostatics%2012th%20notes%20pdf'. This indicates the document's primary purpose is to redirect users to a potentially harmful site, disguised as educational content. The presence of numerous other PDF links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to increase visibility of the malicious redirector. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the payload.

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/wb?keyword=electrostatics%2012th%20notes%20pdf
    • http://files.withlovezoerose.com/uploads/1/3/0/8/130874541/51722c8b71.pdf
    • http://files.ctthompsonconsulting.com/uploads/1/3/1/6/131606965/pikiwevik_varura.pdf
    • http://files.wrhg.co.uk/uploads/1/3/1/4/131407734/1272da26d97f.pdf
    • https://cdn.shopify.com/s/files/1/0432/1047/3633/files/54606944698.pdf
    • https://cdn.shopify.com/s/files/1/0435/8144/0168/files/12579936085.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/89854980246.pdf
    • https://cdn.shopify.com/s/files/1/0432/1551/9912/files/xamogimogakegonopijixemox.pdf
    • https://cdn.shopify.com/s/files/1/0437/4803/2663/files/pdf_secured_document_unlock_online.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/83726506013.pdf
    • https://cdn.shopify.com/s/files/1/0432/5385/8472/files/56221843250.pdf
    • https://cdn.shopify.com/s/files/1/0428/0877/0726/files/85049483839.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/donobuxerukafij.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/kisikotalusejudakewigug.pdf
    • https://cdn.shopify.com/s/files/1/0439/6616/9246/files/87812658785.pdf
    • https://cdn.shopify.com/s/files/1/0434/5410/3713/files/61330745354.pdf
    • https://cdn.shopify.com/s/files/1/0434/6960/2978/files/estudio_descriptivo_comparativo.pdf
    • https://cdn.shopify.com/s/files/1/0439/5306/2043/files/principles_of_centrifugation.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_off00009413.bin
96cb8ee3ba3379b4d6b28a5415817f5044cbde5c365502392f4cfd870abbe4c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9413 5384 bytes
font_01_sfnt_off0000a656.bin
e20c79db3916f4ba2dc2db1a85fa8d3c2242ac45545c979987cf02400b50a259		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA656 13932 bytes
font_02_sfnt_off0000d2a0.bin
51b8d4c4f17389d80b23040d591c0dccb099bca9103ea84f58116e310badbe13		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A0 16088 bytes
font_03_sfnt_off0000e794.bin
d05e760f6b09777b218384c4e10abb9da46aa9039c5f3ff864e168d1d6808186		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE794 4048 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.