Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3792e71261bfed…

MALICIOUS

PDF

43.6 KB Created: 2020-08-28 06:13:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96f14a50ea66ab24f56f997a64518617 SHA-1: 3a3d500738376949f4d5fe2cc1ca0467fac2ae88 SHA-256: cc3792e71261bfed1a8675724a71ac0d563dff1307482e4ba6d46dda54291733
150 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.cc/pify?keyword=endless+legend+best+faction+for+beginners'. This indicates an attempt to lure users to malicious infrastructure. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or redirection strategy. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=endless+legend+best+faction+for+beginners
    • http://pikejo.abym.shop/uploads/1/3/1/4/131408103/bepalanamogamisera.pdf
    • http://files.alphachichico.org/uploads/1/3/2/6/132682904/pimikuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/masojif.pdf
    • https://cdn.shopify.com/s/files/1/0434/1779/6770/files/e5_b4_a9_e5_9d_8f3.pdf
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/bajaj_boxer_wiring_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0428/3547/6636/files/zavanewubitoveme.pdf
    • https://cdn.shopify.com/s/files/1/0433/6821/8780/files/40390153791.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2821/files/24097458476.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/allen_key_sizes_in_mm.pdf
    • https://cdn.shopify.com/s/files/1/0431/7711/5810/files/mutusovadirurami.pdf
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/17256705699.pdf
    • https://cdn.shopify.com/s/files/1/0432/7607/5164/files/jemedenuwosonopogibiwofal.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/neoliberal_education_in_the_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tipibag.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_off00006cb0.bin
b5c0513b10b2b9662dde7b54af36a3f0505c8b37f0bc3d56456624710be2401e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB0 5284 bytes
font_01_sfnt_off00007eaf.bin
5dc34d23f08ad19fcd8a38f0bc0c09a1c104bd4655ab66d6cbb7ae00e8c59807		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAF 10196 bytes

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