Malicious PDF — malware analysis report

Static analysis result for SHA-256 e955a2372abe91ff…

MALICIOUS

PDF

42.2 KB Created: 2020-08-22 14:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47efa9cebffdf4b286dbbe6c090c2718 SHA-1: c59cc23b7bc6cf915481a9405fae63a6a33224e6 SHA-256: e955a2372abe91fff2246ee2b5e84e2d92aa1eca718e408f6275a8576f6d9232
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a redirector service. The document body text and embedded URLs suggest a lure related to employment, aiming to trick users into clicking the malicious link. The primary malicious URL identified is ttraff.cc, which is known for redirecting to 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=gainful+employment+disclosure+template
    • http://vigij.corrymfg.com/uploads/1/3/0/8/130874276/kukibu.pdf
    • http://jufepoti.romancatholicgoodnews.com/uploads/1/3/2/8/132814930/ranezuzotumokamaju.pdf
    • http://xeroga.langtonassociates.com/uploads/1/3/2/7/132710712/nodaxibugepanone.pdf
    • http://miwunu.homecompanyservice.com/uploads/1/3/1/4/131406665/39751c.pdf
    • http://files.artsmindfulmedium.com/uploads/1/3/1/6/131606231/juduguxokumexuvese.pdf
    • https://cdn.shopify.com/s/files/1/0440/8072/6168/files/decode_base64_attachment.pdf
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/nobisarowakonowa.pdf
    • https://cdn.shopify.com/s/files/1/0449/6785/4248/files/design_and_analysis_of_algorithms_notes.pdf
    • https://cdn.shopify.com/s/files/1/0429/3358/4035/files/86532360136.pdf
    • https://cdn.shopify.com/s/files/1/0440/1332/2398/files/fadasidevozuferege.pdf
    • https://cdn.shopify.com/s/files/1/0428/9200/1433/files/tufegogapajuwiginedur.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/58932901415.pdf
    • https://cdn.shopify.com/s/files/1/0438/8916/4440/files/73512853504.pdf
    • https://cdn.shopify.com/s/files/1/0429/7778/8057/files/abordagem_da_pesquisa.pdf
    • https://cdn.shopify.com/s/files/1/0447/7508/0087/files/70335138099.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_off000065b6.bin
590dc07e71fb875432a1cee780e9f19009458c406aa0acc6a8bfe7f181210e75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65B6 5436 bytes
font_01_sfnt_off00007828.bin
f98c53339062b86e923d40637ab057727b9b49bdcaf22c18f9981b21dffa5026		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7828 10552 bytes

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