Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa0c5849de5cd066…

MALICIOUS

PDF

42.1 KB Created: 2020-04-13 23:30:59 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 61521360c8532d5628c14d3704adf591 SHA-1: 5a49e57e7a614b8b322e443eb510135fce44c51c SHA-256: aa0c5849de5cd066fb8ee7679ccde05560d5af31ddf15b11c3e270ac96cced45
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a common tactic for SEO spam or phishing campaigns. The document body, though heavily obfuscated, contains text suggesting a lure for free piano sheet music. The primary URL, http://theothertd.com/uploads/1/3/1/4/131437554/131437554.html#idontwannabeyouanymore+piano+sheet+free, is likely the initial landing page for this campaign. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://theothertd.com/uploads/1/3/1/4/131437554/131437554.html#idontwannabeyouanymore+piano+sheet+free
    • http://duskcollaborative.org/uploads/1/3/0/6/130604621/pevuziximijosaxuke.pdf
    • http://churchofchristgrapevine.com/uploads/1/3/1/0/131070469/d2c9bc9.pdf
    • http://bayviewblast.com/uploads/1/3/0/4/130435898/luxerabobojilux.pdf
    • http://lesbutineusesdemarcoux.com/uploads/1/3/0/7/130776476/4589680.pdf
    • http://soaperswithoutborders.org/uploads/1/3/0/6/130621278/riribarafipudeg-nafix-senixasodura.pdf
    • http://petpalspetandhomecare.com/uploads/1/3/1/4/131408092/2242751.pdf
    • http://rebeltreads.net/uploads/1/3/0/8/130813851/8438365.pdf
    • http://canopypartspro.com/uploads/1/3/1/4/131453431/cee5f3d.pdf
    • http://uprighttreestand.com/uploads/1/3/0/7/130740066/vumiroja_lisize_zukimelufa.pdf
    • http://craftingcrusaders.org/uploads/1/3/0/4/130436426/e6c518c6fe17b.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007987.bin
4911481849e95b028e1a0e6b0435c1b90064b3b2b89b9e5aab8fd2a0b6232186		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7987 9288 bytes

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