Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc6acf3b3d6ed126…

MALICIOUS

PDF

42.2 KB Created: 2020-08-05 03:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d07f023e780810e24f58ecccfc74f3d SHA-1: b7f32eda3836f4f02a51d0aef085bfd316535573 SHA-256: fc6acf3b3d6ed126de84b73bc92a8f196b0691d9504d647b65563f4a20c21306
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, many pointing to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. This indicates a likely attempt to distribute malicious content or conduct phishing by directing users to potentially harmful websites. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf.

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.ru/pify?keyword=phylum+nematoda+characteristics+pdf
    • http://files.outsideincounseling.org/uploads/1/3/0/7/130775677/mejajukimikesesu.pdf
    • http://files.warrensimonsphotos.com/uploads/1/3/1/4/131407530/kijedorageripok.pdf
    • http://tisex.cocobeautystudio.com/uploads/1/3/0/8/130814423/xudofad-divavumikipow-sadaxafafap.pdf
    • http://files.amirzaheri.com/uploads/1/3/1/3/131380158/8657236.pdf
    • https://cdn.shopify.com/s/files/1/0433/8630/6710/files/tinikufuduxixe.pdf
    • https://cdn.shopify.com/s/files/1/0450/2175/7590/files/qasida_burda_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9670/2104/files/57890859199.pdf
    • https://cdn.shopify.com/s/files/1/0429/9623/6447/files/14220057156.pdf
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/jazupatixun.pdf
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/bozifim.pdf
    • https://cdn.shopify.com/s/files/1/0439/0790/7752/files/osrs_pure_guide_2017.pdf
    • https://cdn.shopify.com/s/files/1/0429/7539/5993/files/vufuvujegubajexakoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/3351/8489/files/computer_lab_posters.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_off00006767.bin
18f766383271ea5ad966cc18bb10c0b41c624ee58051e72e0b4e8cea6ba9fa99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6767 5496 bytes
font_01_sfnt_off000079f7.bin
f75c1a34ec5721d73cc92465a572ac5bed9d0ebb9113a1cc6235725a99e5c79c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79F7 10028 bytes

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