Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8f864dda667852a…

MALICIOUS

PDF

67.9 KB Created: 2020-07-29 10:04:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52a88647984d22532af236ed0be2cec9 SHA-1: 0b42e6908c2ebd7c196b8fe7d76c136a840e8d5f SHA-256: b8f864dda667852a58bc71baaf539bfd0775576bfe26dc392950fed4df921d7d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, identified as a 'PDF SEO Link Farm'. One of the primary links, 'https://ttraff.com/pify?keyword=angularjs+2+tutorial+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to 'Angularjs 2 tutorial pdf', suggesting a lure to disguise the malicious link farm.

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=angularjs+2+tutorial+pdf
    • http://files.robinsonvisioncenter.com/uploads/1/3/1/4/131452942/sukopimelojotadomubi.pdf
    • http://files.auroraindustrial.co.uk/uploads/1/3/1/4/131407284/9579506.pdf
    • http://files.lblakemedia.com/uploads/1/3/1/4/131455475/pobegipozixufazulir.pdf
    • http://files.asthecrowfliesquiltshop.com/uploads/1/3/0/9/130969461/jirofu-vatevatowixol-nifoxeji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sazofafusogowo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5026/9849/files/52947691487.pdf
    • https://cdn.shopify.com/s/files/1/0434/9417/8982/files/xamuzupoximezufeli.pdf
    • https://cdn.shopify.com/s/files/1/0431/4418/3970/files/55613740849.pdf
    • https://cdn.shopify.com/s/files/1/0431/0342/0570/files/55535059857.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/zisurojukixewa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0625/4494/files/paletefarigibum.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1641/files/zijigeruvulebiporeri.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/59909529361.pdf
    • https://cdn.shopify.com/s/files/1/0429/4351/2732/files/90013937799.pdf
    • https://cdn.shopify.com/s/files/1/0433/8833/8330/files/61509914089.pdf
    • https://cdn.shopify.com/s/files/1/0429/9060/0355/files/pazewimerokobutiwib.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_off0000c5dc.bin
419e9461225bb2033817ab21a2fb1b93d52bdb42e65c22df0b1d43be5816a438		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5DC 5172 bytes
font_01_sfnt_off0000d77f.bin
f5a532312bc1bf238a8c3c97725cd4a1b0ddf2c8b11b8524715b382553194a79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD77F 13352 bytes

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