Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e7331478cf310d1…

MALICIOUS

PDF

53.9 KB Created: 2020-08-28 11:06:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4083f79c6a22272bc66a462803ebf99f SHA-1: 6366a6480f869a14c94cbe26a6fda3c7c0824df5 SHA-256: 2e7331478cf310d1f8f4ce75f88fade87fbc6434ac6c55a01c4d5629a0f45897
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=read+mockingjay+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The PDF also contains a large number of external links, suggesting a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, and the document body was heavily obfuscated, but the presence of the malicious redirector is sufficient evidence for the attack pattern.

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=read+mockingjay+pdf
    • http://files.rugbyconsulting.com/uploads/1/3/1/4/131453636/mosuwofamupame.pdf
    • http://tupez.diamondhomes.net/uploads/1/3/1/3/131384609/3380089.pdf
    • http://files.menifeeteachers.org/uploads/1/3/1/3/131381078/molejo-ravevib-kewevu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3876/8284/files/35323192547.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/gosoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/4334/8892/files/posejuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50537202024.pdf
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/ccleaner_for_android_mobile_free_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/1505/3213/files/dimewesoru.pdf
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/45295443254.pdf
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/ocarina_of_time_promotional_manga.pdf
    • https://cdn.shopify.com/s/files/1/0430/9050/9973/files/76668463329.pdf
    • https://cdn.shopify.com/s/files/1/0435/1046/4667/files/10963956029.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/64631004105.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008962.bin
72d17549024a4f88b15afc26fd5e983377a7c88ebcbcf660570b5f44f8182c7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8962 5124 bytes
font_01_sfnt_off00009ace.bin
2a60929bc597645f890e4ee504dc833c39dfe035b1deeed048a6e5efaf43b3f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ACE 9896 bytes
font_02_sfnt_off0000bc8d.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC8D 4324 bytes

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