Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc471762f2d22ce1…

MALICIOUS

PDF

43.3 KB Created: 2020-08-17 13:25:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89a049477bf55f1a7ea334de986f13cb SHA-1: dd54d42b31e9c2525568b91e8a226b641f276d1c SHA-256: dc471762f2d22ce136d94645a189ba245d7b49249da25c8a715556efcc3451ed
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body is heavily obfuscated but contains a reference to the malicious URL. The primary purpose appears to be SEO manipulation or redirecting users to malicious content through a link farm.

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=confirmation+symbols+worksheet
    • http://files.easternsloperanch.com/uploads/1/3/0/7/130776246/tiragonisalivej.pdf
    • http://files.28thmpretired.com/uploads/1/3/1/6/131606411/totatukotim.pdf
    • http://files.dance4him.org/uploads/1/3/1/8/131856188/5194559.pdf
    • https://cdn.shopify.com/s/files/1/0432/6762/1028/files/xerowazuvelapozixofeva.pdf
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/ripujizefavudotiposefa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76957488457.pdf
    • https://cdn.shopify.com/s/files/1/0427/4873/9740/files/namuxiwad.pdf
    • https://cdn.shopify.com/s/files/1/0438/2756/0610/files/treatment_of_pulmonary_hypertension.pdf
    • https://cdn.shopify.com/s/files/1/0430/8559/4775/files/biologisch_dynamische_zaaikalender_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/1309/5067/files/33362032449.pdf
    • https://cdn.shopify.com/s/files/1/0434/9889/7574/files/90951469867.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/varogugokun.pdf
    • https://cdn.shopify.com/s/files/1/0432/8197/3403/files/49247086868.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_off00006af9.bin
3df1191229cd524bdd23edd6bd64fa6cc41a4033a3ba0f3df1ae81f02fc2538e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF9 5312 bytes
font_01_sfnt_off00007cf0.bin
81a9bb2578090fd68a917a5f75a08c12983d1ea0a744092644a833d63a84b07f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF0 10472 bytes

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