Malicious PDF — malware analysis report

Static analysis result for SHA-256 9631e8169213a06c…

MALICIOUS

PDF

44.6 KB Created: 2020-08-23 04:48:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 755b2a73bb6fb29829cbe3b3c1128b13 SHA-1: 9239af4b8986c2eaa86144c536f5e7c53c6af348 SHA-256: 9631e8169213a06c79e5f9a5afe3a22d8bf104bf0616d3b24190c2a00c28501c
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=film+get+smart+lk21'. This URL is embedded within the document body, suggesting an attempt to trick users into clicking it for a purported film download. The presence of a large number of external PDF links, many hosted on shopify.com, indicates a link farm strategy, likely to improve search engine ranking for malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the primary intent appears to be redirection to a malicious site.

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=film+get+smart+lk21
    • http://bumosus.thaiyogajen.com/uploads/1/3/0/7/130739223/3172172.pdf
    • https://cdn.shopify.com/s/files/1/0454/5331/2150/files/setting_acrobat_as_default_reader_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0437/8689/5512/files/theatrical_cv_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/3074/8055/files/babawigulekavawozu.pdf
    • https://cdn.shopify.com/s/files/1/0436/1384/7710/files/trasplante_de_medula_osea.pdf
    • https://cdn.shopify.com/s/files/1/0432/1493/0084/files/shake_your_tail_feather_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/wagitasa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/blackbird_tablature.pdf
    • https://cdn.shopify.com/s/files/1/0439/2180/1371/files/how_to_change_elite_dangerous_hud_color.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/53558345196.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/metegemekipezafekude.pdf
    • https://cdn.shopify.com/s/files/1/0437/7749/1098/files/94171723294.pdf
    • https://cdn.shopify.com/s/files/1/0437/6441/6661/files/debutumilevewaxutiwam.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_off000070d1.bin
541618937b07ecd999ea287b5424c06af2b73019172fae24b5209c4eef80baa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D1 5208 bytes
font_01_sfnt_off00008279.bin
6a85c79d6e672c0f88b57a3e5482fa44015077e3752bc9cbd0a0a144b8078d8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8279 10364 bytes

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