Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc0e7e480a6504c4…

MALICIOUS

PDF

46.2 KB Created: 2020-08-17 00:38:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63c4934ae88d5ff9d617447c300680dd SHA-1: d13290f769b4a38112d2c124726000d087739b6b SHA-256: fc0e7e480a6504c4b6b12af48451fdb24bd9a6386ec7e2c6797bcc6f0777351a
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous embedded URLs. One critical heuristic identified a link to known malicious redirector infrastructure at `https://ttraff.com/pify?keyword=chrysanthemum+stone+formation`. The document body, though heavily obfuscated, also contains this URL and other embedded links, suggesting a primary purpose of directing users to external, potentially malicious, content. 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.com/pify?keyword=chrysanthemum+stone+formation
    • http://files.jakewheeler.com/uploads/1/3/2/6/132695525/34f54ca07f.pdf
    • http://files.cpsplantscapes.com/uploads/1/3/0/7/130775970/wutolusedo-lirudomaxo.pdf
    • http://jimiw.mosherministries.com/uploads/1/3/1/4/131437850/31395b88.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sovir.pdf
    • https://cdn.shopify.com/s/files/1/0437/9390/7869/files/fawoxifuvokikavumitazal.pdf
    • https://cdn.shopify.com/s/files/1/0438/3178/7670/files/anorectal_surgery.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/wind_crystal_swtor.pdf
    • https://cdn.shopify.com/s/files/1/0451/0826/5125/files/teleninovanapij.pdf
    • https://cdn.shopify.com/s/files/1/0434/3398/4157/files/zedulotirufasitepo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8484/9045/files/attila_metalcore_band.pdf
    • https://cdn.shopify.com/s/files/1/0437/2915/8295/files/44153728678.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/kavudukuxazizofevopa.pdf
    • https://cdn.shopify.com/s/files/1/0429/3191/2857/files/torufekix.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_off00007835.bin
4f5248eb2bb785f31f7095d5a670c34b6bb4bf3c5387dd63b2118aa9f384fd40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7835 4984 bytes
font_01_sfnt_off00008900.bin
9d29eeb9d78a59bbedd1ef05e8bc10c7e895103f8ee60540b879530fa36f1b29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8900 10272 bytes

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