Malicious PDF — malware analysis report

Static analysis result for SHA-256 28b4623cec29bdf2…

MALICIOUS

PDF

44.9 KB Created: 2020-04-08 02:39:58 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4829dd7f1b6c43ccfbfb17a1114ec4f2 SHA-1: 3ce47648a5c85cdb8988b3a62aff6c4ccd8bb83f SHA-256: 28b4623cec29bdf2fc8072f92eacbf5677b89c20db9302fc1b896eeb945c3c89
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO manipulation or to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, with the dominant host being 'davesharpe.blog'. The embedded URI 'http://googleroads.com/uploads/1/3/0/3/130323187/130323187.html#the+survival+handbook+ray+mears' and numerous other PDF links suggest a coordinated effort to redirect users to potentially harmful sites.

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://googleroads.com/uploads/1/3/0/3/130323187/130323187.html#the+survival+handbook+ray+mears
    • http://davesharpe.blog/uploads/1/3/0/4/130490444/3246517.pdf
    • http://balirestandrelax.com/uploads/1/3/0/6/130605376/samepid_talara_tetagegidotaxot_jawoxi.pdf
    • http://theroomupstairs.org/uploads/1/3/0/5/130539340/e8662362490b4b9.pdf
    • http://themoderndavinci.com/uploads/1/3/0/9/130969216/sobebufev.pdf
    • http://shebringspeace.com/uploads/1/3/0/6/130621369/veladomalibozif.pdf
    • http://radioevasi.com/uploads/1/3/0/6/130603710/515543720af0d.pdf
    • http://themalibubuilder.com/uploads/1/3/0/6/130621248/5957761.pdf
    • http://thequailsnest.com/uploads/1/3/1/1/131164311/wegogojuledo.pdf
    • http://breakabarrier.org/uploads/1/3/0/5/130543256/tixuvezezijib-vuvabitejororu-sowokofano-vixoxozovube.pdf
    • http://naturalfootpodiatry.com/uploads/1/3/0/8/130814976/5770300.pdf
    • http://chamonixgym.com/uploads/1/3/0/9/130969841/kekeli_netaleroladu_wilizafadevemat.pdf
    • http://incubando.org/uploads/1/3/0/5/130588625/linak.pdf
    • http://jroachagency.com/uploads/1/3/0/6/130639886/pobixe-giwuzujigol-rajafofeparer.pdf
    • http://tessaandjay.com/uploads/1/3/0/9/130969648/9ed93ed.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_off00008644.bin
35dc2615b26ef95c6f0b55d16d0734581aa5133ba9c40539ee28976a22773093		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8644 8564 bytes

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