Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc4306f84ccc249b…

MALICIOUS

PDF

48.4 KB Created: 2020-07-30 16:57:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98bac41b6b30f432d3df3a939b389328 SHA-1: cc933fe7ee647c5d7a9eb41671a0d95dfb224fc7 SHA-256: bc4306f84ccc249b1e6228023af490f02a0d95988a4650aee3f0bbdc4a51ea38
150 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical redirector link to 'ttraff.com', which is associated with malicious activity. The document body, though heavily obfuscated, contains text related to 'afterburn sylvia day pdf free download', suggesting a lure for users seeking copyrighted material. The presence of a PDF link farm further indicates an attempt to distribute malicious content or drive traffic to malicious sites. No scripts were extracted from this sample.

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.com/pify?keyword=afterburn+sylvia+day+pdf+free+download
    • http://files.jamstheatrecompany.com/uploads/1/3/2/7/132740339/7259930.pdf
    • http://files.positivepsyc.com/uploads/1/3/2/8/132814906/ad70e085822396d.pdf
    • http://files.howtomakemerich.com/uploads/1/3/2/3/132303081/mufejegu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0641/1431/files/69784791389.pdf
    • https://cdn.shopify.com/s/files/1/0437/7922/7810/files/malodupoxejav.pdf
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/78064589704.pdf
    • https://cdn.shopify.com/s/files/1/0438/7323/9195/files/dexomuwixugikok.pdf
    • https://cdn.shopify.com/s/files/1/0430/0367/4785/files/44613569641.pdf
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/ripoka.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/55613077616.pdf
    • https://cdn.shopify.com/s/files/1/0431/2976/6039/files/82229052059.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/1/0430/0367/4785/files/4461356

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069f4.bin
ae3ecfa1d5949cdb03a74713f2c734adb713927f6b8cbab53b2a306a31866476		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F4 5300 bytes
font_01_sfnt_off00007c16.bin
e5df536e2bf4834fcb720f81792a9a56a8db7175bcf51067c8bcfef650ab21cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C16 10224 bytes
font_02_sfnt_off00009f39.bin
39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F39 16092 bytes

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