Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4ec3d9b1c864509…

MALICIOUS

PDF

42.6 KB Created: 2020-08-08 14:44:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ace65d3984ffd478b048b31c3eeb9a3 SHA-1: e47d535d5c90064f27510977dcb44a46099f8272 SHA-256: a4ec3d9b1c864509ee963b97ec7a7ba79de48bc32cc4a068991b1d99e285b4cd
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=george+orwell+keep+the+aspidistra+flying+pdf'. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution.

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=george+orwell+keep+the+aspidistra+flying+pdf
    • http://kekegasa.albertadeer.com/uploads/1/3/1/6/131606186/c0a8f9.pdf
    • http://files.supportrealheroes.com/uploads/1/3/1/8/131858287/vemofo.pdf
    • http://files.virtus.hu/uploads/1/3/1/4/131437823/f6d0aeb6e.pdf
    • http://files.cantonguitarsociety.org/uploads/1/3/1/8/131871593/sapapufopeto.pdf
    • https://cdn.shopify.com/s/files/1/0433/7795/0870/files/ladinubigexugen.pdf
    • https://cdn.shopify.com/s/files/1/0432/1109/6221/files/ximozevasixonazolosamefun.pdf
    • https://cdn.shopify.com/s/files/1/0435/5837/1496/files/jatitojum.pdf
    • https://cdn.shopify.com/s/files/1/0439/1141/3915/files/ledivujazi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/blank_sheet_music_notebook.pdf
    • https://cdn.shopify.com/s/files/1/0436/0726/1341/files/blackfathom_deeps_map.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/membrane_structure_pogil.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/plural_form_of_nouns_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/jikewilijawejezofixuvebak.pdf
    • https://cdn.shopify.com/s/files/1/0428/6421/4182/files/traitement_de_surface_aluminium.pdf
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/73790198250.pdf
    • https://cdn.shopify.com/s/files/1/0433/0140/4830/files/julazujebilusokimo.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_off00006815.bin
2879e05fbd7a2d6abd21f1c352e9d988445aa471dfa426843334f3ac2f758d9c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6815 5592 bytes
font_01_sfnt_off00007b37.bin
21478cf55d6a0fbc4275c51c3896b0fdc10cdd6739e72d8bd4a41475195c9aaa
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B37 9988 bytes