Malicious PDF — malware analysis report

Static analysis result for SHA-256 55f02565509b3e2b…

MALICIOUS

PDF

42.4 KB Created: 2020-08-23 23:19:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72a3fcccc753c7e7100854d75b40a521 SHA-1: 9b36b7153a27201c778d20d4cb710cdfa1090766 SHA-256: 55f02565509b3e2b08b3736ae674f0bc1e49a05238fb82e7d2d46f3c6d62c526
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate content, but the primary link redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains the malicious URL. The presence of numerous external PDF links, many pointing to obscure domains, suggests a link farm used for SEO manipulation or to host further malicious 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.cc/pify?keyword=happy+birthday+song+sheet+music+for+trombone
    • http://xevenak.stoicqabalah.com/uploads/1/3/2/6/132683138/kadawewaleroj.pdf
    • http://files.bradleyestates.co.uk/uploads/1/3/2/6/132682570/wirifobeje.pdf
    • http://jibolomaz.waggonerguidebooks.com/uploads/1/3/0/7/130776023/febf4.pdf
    • http://files.wcacreatives.com/uploads/1/3/1/8/131856904/pamijuwis-mawamaledesakij-xeganabu-gidimugere.pdf
    • http://xoritem.teamgoughrealestate.com/uploads/1/3/0/8/130873715/116f91dddb.pdf
    • http://files.wcacreatives.com/uploads/1/3/1/8/131856904/pamijuwis-mawamaledesakij-xeganabu
    • https://cdn.shopify.com/s/files/1/0447/7334/3383/files/adverbial_phrase_list.pdf
    • https://cdn.shopify.com/s/files/1/0430/6072/3865/files/warframe_eidolon_beginners_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/55350213647.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6343/files/84279742894.pdf
    • https://cdn.shopify.com/s/files/1/0430/8910/0957/files/mewumagatarusikesotewatex.pdf
    • https://cdn.shopify.com/s/files/1/0437/2758/5445/files/verb_and_noun_examples.pdf
    • https://cdn.shopify.com/s/files/1/0459/2412/2773/files/pokemon_go_giratina_altered_forme_raid.pdf
    • https://cdn.shopify.com/s/files/1/0437/6041/8970/files/masizajuxasepeviwelew.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/fuzalikesomote.pdf
    • https://cdn.shopify.com/s/files/1/0433/8424/2337/files/degree_of_freedom_mechanics.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_off00006748.bin
df16f7242bc633c8b69670d77a83c4c7badbd5efc42f3b8cb6cb2c819f6ddd0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6748 5740 bytes
font_01_sfnt_off00007a9e.bin
b2ffadc364ffb782c5db3287b4f0de9e0fbf1cc35fec355db1626287f60143b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9E 9896 bytes

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