Malicious PDF — malware analysis report

Static analysis result for SHA-256 aebd17787ccada62…

MALICIOUS

PDF

35.5 KB Created: 2020-08-13 21:23:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40873229538783c6fd8cf9c258a14421 SHA-1: 5accaf5750f60f2d1d83be2560d51133ec969b7a SHA-256: aebd17787ccada62941ac14af8636254cd1cb2f0af8e96e911796a34feab1c22
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external PDF links, indicating a link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=ballade+pour+adeline+noten+pdf. The document body contains obfuscated text and references to the wkhtmltopdf tool, suggesting it was programmatically generated. The presence of numerous links points towards a social engineering tactic to lure users to potentially harmful content.

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=ballade+pour+adeline+noten+pdf
    • http://kobog.the-crafty-sagittarius.com/uploads/1/3/0/7/130738615/3646380.pdf
    • http://files.projectyouthextension.com/uploads/1/3/1/6/131606755/guraved-babaderasuti-nujemilarojo.pdf
    • http://mesajifa.raynalong.com/uploads/1/3/0/9/130969754/ninorod-winegitajuwel-rozijuw.pdf
    • http://kononu.ducksoupntreats808.com/uploads/1/3/1/4/131453541/cdcfd.pdf
    • http://files.horizonmusicedson.com/uploads/1/3/1/4/131453855/mexojokeni.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/vosewowokelunowunijivifov.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/83266057750.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/punafaga.pdf
    • https://cdn.shopify.com/s/files/1/0436/1358/5566/files/sexinoxofokikakosizej.pdf
    • https://cdn.shopify.com/s/files/1/0433/0248/6180/files/63438354276.pdf
    • https://cdn.shopify.com/s/files/1/0431/2557/1733/files/dolakusorufonatar.pdf
    • https://cdn.shopify.com/s/files/1/0440/7692/5078/files/20317001.pdf
    • https://cdn.shopify.com/s/files/1/0437/6962/6781/files/podigigipozojomasenadu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/48635047293.pdf
    • https://cdn.shopify.com/s/files/1/0432/8062/9913/files/bleak_house_by_charles_dickens_download.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_off000044e4.bin
642434f179828d82bb7f71ccde7077ac06264bb7e186a258e9237cc8cb27e5d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44E4 4908 bytes
font_01_sfnt_off000055a0.bin
c8db912b18941ff00474e30e7ffb8d6e0b0204327676e16892321aaf4f10a579		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55A0 13160 bytes

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