Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2aad06aa4d1d2e5…

MALICIOUS

PDF

43.6 KB Created: 2020-08-26 02:26:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c85c6c2d595d09f05467372b3eac40f SHA-1: 1c7e796fd585efa9618fa524a09a76a21213c87f SHA-256: f2aad06aa4d1d2e53ea33bea2ea9a4fab29966438ec0c9911d5c111367a806ee
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a direct link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the target URL and appears to be a lure related to a 'technical-economic feasibility study'. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many of which point to Shopify domains, suggesting an attempt to obscure the malicious redirector. No scripts were extracted from this sample.

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.club/pify?keyword=pre-factibilidad+t%25C3%25A9cnica-econ%25C3%25B3mica+que+es
    • http://files.themudlakeproject.ca/uploads/1/3/0/8/130874612/viwegiduwo-rarodinetesuwom-resejato-dovibulureja.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/playbook_barney_stinson_italiano.pdf
    • https://cdn.shopify.com/s/files/1/0437/8984/4631/files/jurnal_fenomena_adsorpsi.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/kvs_biodata_form_for_interview_tgt.pdf
    • https://cdn.shopify.com/s/files/1/0431/0768/0405/files/dibibuvinofiforu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5389/1232/files/jigofol.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/waledimekodotepaxemogalo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/74100341539.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/happily_bedded_bliss.pdf
    • https://cdn.shopify.com/s/files/1/0437/1136/5288/files/62714021601.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/peregomosurexezobosezob.pdf
    • https://cdn.shopify.com/s/files/1/0437/5019/5354/files/biological_weathering_of_rocks.pdf
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/power_wagon_registry.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_off00005c84.bin
ae36ee7db1efb1d48658bec4da84b98bdbc0fd0eb95f3cd4a18aa96a3dae9055		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C84 5628 bytes
font_01_sfnt_off00006eef.bin
c7e6aa22022c274650853ea1f0983d5efb3ed9a28ab8fbe43613e299dcab340c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEF 10528 bytes
font_02_sfnt_off00009139.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9139 4324 bytes

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