Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed7da11f78fde721…

MALICIOUS

PDF

42.7 KB Created: 2020-07-29 12:31:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a578d0b4fd576920576138836c38ca19 SHA-1: 8153ba936bb8a8e1720f42039f55f69e35e4fb78 SHA-256: ed7da11f78fde7214b498684b42d674f22aae442388c9e387ca13d4fed033f9c
150 Risk Score

Malware Insights

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

The PDF contains multiple external links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'attestation sur l honneur pdf cpam'. The presence of a malicious redirector link indicates an attempt to lead the user to a harmful destination, likely for phishing or to download further malicious content.

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=attestation+sur+l+honneur+pdf+cpam
    • http://files.benningtonsepc.com/uploads/1/3/0/7/130738919/nedowelazamovopekan.pdf
    • http://files.cowatercongress.org/uploads/1/3/2/7/132710596/5152751.pdf
    • http://files.aemiliawidodo.com/uploads/1/3/1/6/131637194/7882275.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/678280754.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/mezigulusajoxewukideruwap.pdf
    • https://cdn.shopify.com/s/files/1/0437/3836/6113/files/77612904419.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/wexok.pdf
    • https://cdn.shopify.com/s/files/1/0437/3748/1365/files/67151554620.pdf
    • https://cdn.shopify.com/s/files/1/0431/6905/4886/files/josugetuvijujibobo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0505/8976/files/kivukep.pdf
    • https://cdn.shopify.com/s/files/1/0428/7037/4559/files/410846169.pdf
    • https://cdn.shopify.com/s/files/1/0428/2315/5878/files/38883982382.pdf
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/22271155696.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/viwumiwapibugadojuxoxusa.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_off00006606.bin
98813e3f5b77013f8814bfb12877aab82a58008ea8ba4f583f584dd16220450b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6606 5264 bytes
font_01_sfnt_off000077b2.bin
db3ab6df35dfa1469900531dc08ebbbc7900007eba96fd9ebb870cc2daa466b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77B2 11456 bytes

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