Malicious PDF — malware analysis report

Static analysis result for SHA-256 92cc520942fa2024…

MALICIOUS

PDF

44.4 KB Created: 2020-08-21 01:01:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bc39a6684acd3acc32a8f769c526ea8 SHA-1: 981adbc094fde57200d7c4f200f275eeb9d7acfd SHA-256: 92cc520942fa2024e9949209d51eb6ad5231345891c3171bfc50b4a040057707
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=fodlan+winds+violin+sheet+music'. Another critical heuristic indicates a PDF link farm, suggesting an attempt to artificially inflate search engine rankings or distribute multiple malicious links. The document body, though heavily obfuscated, contains references to sheet music, likely serving as a lure. 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.cc/pify?keyword=fodlan+winds+violin+sheet+music
    • http://mafifaxa.elafusa.com/uploads/1/3/2/8/132814940/3308795.pdf
    • http://files.canyonfallsestates.org/uploads/1/3/1/0/131070402/9381831.pdf
    • https://cdn.shopify.com/s/files/1/0431/5709/4559/files/28459043834.pdf
    • https://cdn.shopify.com/s/files/1/0439/0672/8091/files/pojotogo.pdf
    • https://cdn.shopify.com/s/files/1/0439/5306/2043/files/rejoxojozobumadex.pdf
    • https://cdn.shopify.com/s/files/1/0438/2097/4242/files/63810569645.pdf
    • https://cdn.shopify.com/s/files/1/0434/8300/5093/files/pemutegizimerodifolimewa.pdf
    • https://cdn.shopify.com/s/files/1/0438/8447/8632/files/bncc_baixar.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/89384619755.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/
    • https://cdn.shopify.com/s/files/1/0438/8447/863

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000621e.bin
a0d3c4a87cb4e5ab30d9a65ede84e06294babe6b040d87b5d817718f8305096f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x621E 5188 bytes
font_01_sfnt_off000073be.bin
4e7b996ce7fc92e9d13af9d634e2473ff658ada55dcddb8ea6be22a7b72baa8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73BE 15016 bytes

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