Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cc7644d85e704c4…

MALICIOUS

PDF

46.5 KB Created: 2020-08-21 11:46:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 509ac3f023d791baf6980cf701995928 SHA-1: 3425b4de0be077841a5a67d88e2d969f14544778 SHA-256: 7cc7644d85e704c4ef7c03fa2a40d15431f1e3bcf865de6a6fb21c359dba9d36
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL found in the heuristics. This suggests the primary goal is to redirect the user to a malicious site, likely for further exploitation or credential harvesting. The presence of numerous links, many pointing to Shopify, indicates a link farm strategy to improve SEO and distribute the malicious payload.

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.ru/pify?keyword=bhagavad+geeta+in+marathi+pdf+full
    • http://files.angieskonacoffee.com/uploads/1/3/1/4/131453100/9054339.pdf
    • http://files.naopuppet.com/uploads/1/3/1/1/131164431/kidivegeke.pdf
    • https://cdn.shopify.com/s/files/1/0450/3791/2214/files/19943552889.pdf
    • https://cdn.shopify.com/s/files/1/0430/7514/1783/files/list_of_common_cations_and_anions.pdf
    • https://cdn.shopify.com/s/files/1/0429/1959/2099/files/56584637119.pdf
    • https://cdn.shopify.com/s/files/1/0436/1843/5229/files/psychological_treatment_for_schizophrenia.pdf
    • https://cdn.shopify.com/s/files/1/0436/8692/0347/files/pinedizuso.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0791/files/74588702668.pdf
    • https://cdn.shopify.com/s/files/1/0428/7420/8415/files/12415327924.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_off00005de2.bin
98166e5368034a46cd60c4fe9aa0f3c05ca3b27949f9b00c8b144d4c97200b59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE2 5388 bytes
font_01_sfnt_off0000700f.bin
cedc508c7956abe262f2082e35e12d252d3003c933fdfbcf10b24066d9e6af2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x700F 9876 bytes
font_02_sfnt_off00009222.bin
0088c2e29b43a3edc8a484282de7941a242e06e60b26715965e3a46dbd9896ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9222 7212 bytes

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